icefishEnglishOxford Dictionary of Englishicefish /ˈʌɪsfɪʃ / ▸ noun (plural icefish or plural icefishes) 1 a scaleless Antarctic fish of pallid appearance with spiny gill covers and a snout shaped like a duck's bill. Chaenocephalus aceratus, family Chaenichthyidae. 2 another term for capelin ▸ verb [no object] (ice-fish) fish through holes in the ice on a frozen lake or river: ice-fish for perch.