calamar

noun

1. A cephalopod, belonging to the genus <i>Loligo</i> 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 the back, shaped very much like a quill pen. In America they are called <i>squids</i>. See <u>Squid</u>.

   noun

   Source: webster1913