squidn.[Cf. Squirt.]1. (Zol.) Any one of numerous species of ten-armed cephalopods having a long, tapered body, and a caudal fin on each side; especially, any species of Loligo, Ommastrephes, and related genera. See Calamary, Decacerata, Dibranchiata.()()2. A fishhook with a piece of bright lead, bone, or other substance, fastened on its shank to imitate a squid.()Flying squid, Giant squid. (Zol.) See under Flying, and Giant. -- Squid hound (Zol.), the striped bass.()