What is the meaning of Squid?

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.

Source: Webster’s Revised Unabridged Dictionary (1913), via OPTED