The Greek word βούτυρον
Word βούτυρον
b uː. t y r o n
Meaning butter
See also Greek: βοῦς ‘cow, bull’
Proto-Indo-European: *gʷōus ‘cow, bull’
Greek: τυρός ‘cheese’
Proto-Indo-European: teuh- ‘to swell, to grow fat’

Comments

Litteraly 'cow-cheese' from PIE *gʷous 'cow' + *teuh- 'to swell, to become fat'.

Lat. būtȳrum is borrowed from the Greek, and from the Latin in turn OHG butera, MoDu. boter.


Other words that might be of interest
γράω ‘eat, gnaw’, οίνος ‘wine’, εμπότης ‘water jar, urn’, φαγ- ‘to eat, food’, μύλη ‘mill, hand-mill, nether millstone’, τροφή ‘nourishment, food’, καρπός ‘fruit, grain, product, harvest, outcome’, εἰλικρινής ‘unmixed, pure, sincere’, κυλίχνη ‘cup’, μυζάω ‘to suck’, πυρίτης ‘bread, kind of bread’