Entry 2 senses Webster, 1913 Hardhead /(-hĕd`)/ · Hard·head · IPA /ˈhɑɹdˌhɛd/ 01 n. Clash or collision of heads in contest. 1. Clash or collision of heads in contest. 2. The menhaden. See Menhaden.(Zool.) [Local, U. S.] See: Menhaden