forkhead

noun4

1. •
   A sequence of amino acids that forms a motif, in FOX proteins, that binds to DNA.
2. •
   The forked end of a rod in a knuckle joint or similar.
3. •
   (offensive, euphemistic) Euphemistic form of fuckhead.
4. •
   (no longer used) An arrow with a barbed tip.

   • With that at him a quiv'ring dart he threw, / With so fell force, and villeinous despite, / That through his haberjeon the forkehead flew, / And through the linked mayles empierced quite […] — 1590