The Proto-Indo-European word *dhelg-
Word *dhelg-
Meaning to sting, to pierce
See also Proto-Indo-European: *dhelg- ‘pin’
Synonyms *dhwer-, *gʷel-, *h₂/₃weg(h)-, *terh₁-

Comments
Mallory J.P. and Adams D. (2006)

Other words that might be of interest
*dhegʷh- ‘to burn’, *h₁eus- ‘to burn’, *swelp- ‘smoulder, to burn’, *dehau- ‘to kindle, to burn’, *ĝwelhₓ- ‘to burn, to glow’, *h₂ehₓ- ‘to burn, to be hot’