OYSTERFISH Meaning of OYSTERFISH in English ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ noun 1. : tautog2. also oyster-toad ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ : toadfish Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012