What does "calamary" mean?

Calamary: A cephalopod, belonging to the genus Loligo and related genera. There are many species. They have a sack of inklike fluid which they discharge from the siphon tube, when pursued or alarmed, in order to confuse their enemies. Their shell is a thin horny plate, within the flesh of back, shaped very much like a quill pen. In America they are called squids. See Squid.