The Proto-Indo-European word *h₃nógʰ-o- / h₃nógʰ-ro- / h₃nógʰ-i-
Word *h₃nógʰ-o- / h₃nógʰ-ro- / h₃nógʰ-i-
Meaning nail
See also Hittite: ša-an-ku-u̯a-i̯a-aš ‘nail’

Comments
Gk. onukhos, Lat. unguis, Skr. aṅ ghri, Gm. nagel/Nagel, OCS noguti, Russ. nogot', Lith. nagas, Ltv. nags, Av. nakhara, Arm. ełgungn/yeġung/yeġunk, Welsh ewin, Eng. nægl/nail, Pers. /nāxun, Ir. inga/ionga

Other words that might be of interest
*bʰer- ‘to bear, carry’, *dhóhaus ‘to press, wolf’, *ĝhel-1, ĝhelǝ-, ĝhlē- ‘to shine, green, gold’, *kʷel- ‘to turn, wheel, neck’, *ank-2, ang- ‘to bend, bow, curve, snake coil, anchor’, *(s)kr-įe/o- ‘to cut’, *ken-2, kenǝ-, keni-, kenu- ‘to rub, scrape off’, *gembh- ‘to bite, tooth’, *(s)kerbʰ- ‘to turn, to bend’, *k̂es- ‘to cut, to separate’, *leig- ‘to bind’, *gēu-, gǝu-, gū- ‘to bend, curl, a kind of vessel’, *bʰardhehₐ ‘beard’, *bʰeudʰ- ‘to wake, rise up’, *bʰruh- ‘beam, bridge’, *deh₁- ‘to bind’, *deuk- ‘to lead’, *dn̥ĝhuhₐ- ‘tongue’, *drem- ‘to sleep’, *dʰeiĝʰ- ‘to mold’, *ĝebʰ- ‘jaw’, *ĝenu- ‘cheek, chin’, *ĝonu ‘knee’, *ĝómbʰos ‘set/row of teeth, ledge, tooth’, *ĝʰwel- ‘to bend’, *ĝhésr- ‘hand’, *gʰrendʰ- ‘beam’, *gʷelbʰ- ‘womb’, *gʷrebʰ- ‘womb’, *gʷruhĝʰ- ‘to bite’, *gʷʰen- ‘to press’, *h₁ar-mo- ‘arm’, *h₁dont-, h₁dent- ‘tooth’, *h₁el- ‘elbow’, *h₁oh₁s- ‘mouth’, *h₁omh₁-so- ‘shoulder’, *h₁reug- ‘to vomit’, *h₁reus-men- ‘throat’, *h₂ŕ̥tk̂os ‘bear’, *h₁ésh₂r̥- (nom-acc. h₁ésh₂r̥, gen. h₁esh₂n-ós) ‘blood’, *h₁óh₂wyo- (nom-acc. h₁óh₂wyom, gen. h₁óh₂wyo-s) ‘egg’, *hₐegʷisy(e)hₐ- ‘axe’, *h₂eig- ‘sick’, *h₂nos- ‘nose’, *hₐóus- ‘ear’, *h₃erbʰo- ‘work’, *h₃erĝʰi- ‘testicle’, *h₂nobʰ- ‘nave, navel’, *h₃ekʷ- ‘eye’, *h₂óst ‘bone’, *k̂erd- (nom. k̂ēr, acc. k̂érd-m̥ gen. k̂r̥d-ós) ‘heart’, *k̂er- ‘horn’, *k̂ubʰ- ‘shoulder’, *kakka ‘excrement’, *káput ‘head’, *kréuha ‘gore, blood’, *kroksko- ‘leg’, *kwas- ‘to cough’, *kʷrép-o- / kʷr̥p-eh₂- ‘body’, *leb- ‘lip’, *leh₂- ‘to wet, to make flow, to pour, wash’, *leib- ‘to make a libation, to pour’, *leiĝh- ‘to lick’, *leuĝ- ‘to break off, to break’, *man- ‘hand’, *meigʰ- ‘to urinate’, *memso- ‘flesh’, *mono- ‘neck’, *móstr̥ ‘marrow, brain’, *neh₂-u- ‘corpse’, *neigʷ- ‘to wash’, *peg- ‘breast’, *pérde/o- ‘to fart’, *perk̂- ‘rib’, *péses- ‘penis’, *pleh₂k- ‘to hit’, *pṓds ‘foot’, *psten- ‘breast’, *pulh₂- ‘hair’, *reg- ‘move in a straight line, rule, guide’, *resg- ‘to plait’, *skap- ‘tool’, *smek̂- ‘jaw, chin’, *sp(y)eu- ‘to spit’, *sweid- ‘sweat’, *swep- ‘sleep’, *tek̂s- ‘to plait’, *treud- ‘to press’, *twéks ‘skin’, *wedʰ- ‘to lead’, *wem- ‘to vomit’, *ag̑- ‘to lead, drive, agitate’, *hₐénh₁- ‘breathe’, *tom-, tem- ‘to cut’, *kʰʷer-, kʷer- ‘make, form’, *sper- ‘to strew’, *ped- ‘foot’, *werĝ- ‘to work’, ghebʰ(e)l- ‘head, skull’, *hₓópes- ‘work’, *bʰei(hₓ)- ‘strike’, *bʰélhaĝs ‘plank, beam’, *bʰer- ‘to strike (through), to split, to cut’, *bʰeud- ‘strike, beat’, *bʰrúhₓs ‘eyebrow’, *dek̂- ‘thread, hair’, *del- ‘to cut, to carve, to split’, *denk̂- ‘to bite’, *dephₓ- ‘strike’, *der- ‘sleep’, *derha- ‘work’, *dous- ‘(upper) arm, shoulder’, *dhúbʰos ‘wedge, peg’, *gem- ‘to press, to squeeze together, to squeeze’, *gloiwos ‘clay’, *gutr̥ ‘gullet, throat’, *ĝénu- ‘jaw’, *ĝonhadhos ‘jaw’, *ghait(so)- ‘hair, mane’, *ghelunehₐ ‘lip’, *ĝhehaw- ‘gape, yawn’, *ĝheu- ‘to pour’, *g(ᵂ)elbʰus ‘womb’, *gʷétus ‘womb, stomach’, *h₁eh₁tmén- ‘breath’, *h₁erhₓ- ‘to wash’, *h₁ermen- ‘sickness’, *h₁éni-h₃kʷ-o/ehₐ ‘face’, *h₁ekt- ‘net’, *h₁ger- ‘awake’, *h₁/₄óh₁(e)s- ‘mouth’, *h₁/₄ómsos ‘shoulder’, *h₃énr̥ ‘dream’, *h₄edhés- ‘axe, adze’, *h₃elek- ‘elbow, forearm’, *h₃elVn- ‘forearm, elbow’, *hₐō(w)i-om ‘egg’, *hₐeyes- ‘metal, copper, bronze’, *hₓnáss ‘nose’, *hₓoustehₐ ‘lip, mouth’, *kapōlo- ‘head, skull’, *kápr̥ ‘penis’, *kehau- ‘strike, hew’, *kel- ‘drive’, *kel- ‘hew, strike’, *kérdos ‘craft’, *khaónks ‘honey-coloured, golden’, *kóhailus ‘healthy, whole’, *kon- ‘to do, to make’, *tkʷreh₁yot- ‘clay’, *tk̂en- ‘strike’, *wēben ‘cutting weapon, knife’, *wedh- ‘strike, push’, *wémhₓmi ‘to spew, to vomit’, *wen- ‘strike, wound’, *w(n̥)nákts ‘leader, lord’, *yeh₁- ‘to make, to do, to act vigorously’, *yekʷr̥(t) ‘liver’, *yeu- ‘to bind, to join together’, *wreg- ‘to press, to oppress’, *wreh₁ĝ- ‘to break, to tear to pieces’, *wórghs ‘row, chain, series’, *kreu(-s)- ‘strike’, *kseu- ‘to rub, to whet’, *k̂emha- ‘to grow tired, to tire oneself with work, to work’, *k̂ērd ‘heart’, *kʷei- ‘to pile up, to build’, *kʷer- ‘to make, to do, to build’, *k̂r̥rēh₂ ‘head’, *lehₐpehₐ- ‘foot, paw’, *leng- ‘to bend’, *lenk- ‘to divide, to bend, to traverse’, *lesi- ‘liver’, *méhₐr ‘hand’, *merd- ‘to rub, to scrape’, *moisós ‘sheep, ram, fleece, skin’, *mosghos ‘marrow, brain’, *mréghmen- ‘brain’, *néhawis ‘corpse’, *neihₓ- ‘lead’, *per- ‘strike’, *pérk̂us ‘breast, rib’, *pelek̂us ‘axe’, *pleus- ‘(pluck) fleece, feathers’, *pólik(o)s ‘finger, thumb’, *pyek- ‘strike’, *puk(eha)- ‘tail’, *ses- ‘to rest, to sleep, to keep quiet’, *silVbVr- ‘silver’, *skéits ‘shield, board’, *(s)k̂up- ‘shoulder’, *slak- ‘strike’, *sokto- ‘sickness’, *(s)pornóm ‘wing, feather’, *steup- ‘strike’, *stómn̥ ‘mouth’, *swel-~sel- ‘plank, board’, *kl̥tḗr ‘knife’, *kreb- ‘basket’, *(s)kʷéhₓtis ‘hide, skin’, *bʰólom- ‘forehead’, *bʰreu- ‘to cut, to break up’, *dhh₁ilehₐ ‘teat, breast’, *ĝhóstos ‘hand’, *gʷrih₃wehₐ ‘neck’, *h₁dónt- ‘tooth’, *h₁endrós ‘egg, scrotum’, *h₁óuhₓdhr̥ ‘breast, udder’, *h₂ent- ‘forehead’, *h₂erĝn̥tom ‘silver, white (metal)’, *h₄órĝhis ‘testicle’, *hₐeĝós ‘leader’, *hₐek̂slehₐ- ‘shoulder’, *hₐenĝh(w)ēn- ‘neck’, *hₐénh₁mos ‘breath’, *hₐeusom ‘gold’, *k̂ókʷr̥ ‘dung, excrement, manure’, *kólsos ‘neck’, *k̂óru ‘horn’, *k̂r̥nom ‘horn’, *k̂érh̥₂s ‘horn’, *k̂érh̥₂sr̥ ‘horn’, *kert- ‘knife’, *kérmen- ‘skin’, *k̂ostrom~k̂osdhrom ‘knife’, *koryonos ‘leader’, *kʷr̥wis ‘tool’, *ml̥dho/ehₐ- ‘clay’, *men- ‘chin’, *pet(e)r- ‘feather, wing’, *pedom ‘footprint, track’, *(s)kel- ‘to cut, to split apart’, *sekūr- ‘axe’, *smók̂wr̥ ‘chin, beard’, *swópniyom ‘dream’, *swópnos ‘sleep, dream’, *tagós ‘leader’, *tek̂so/ehₐ ‘adze, axe’, *ter(i)- ‘to turn, to rub’