'Cuttlefish' definitions:

Definition of 'cuttlefish'

noun

Ten-armed oval-bodied cephalopod with narrow fins as long as the body and a large calcareous internal shell [syn: cuttlefish, cuttle]

From: GCIDE

Cuttle \Cut"tle\ (k[u^]t"t'l), Cuttlefish \Cut"tle*fish`\ (-f[i^]sh`), n. [OE. codule, AS. cudele; akin to G. kuttelfish; cf. G. k["o]tel, D. keutel, dirt from the guts, G. kuttel bowels, entrails. AS. cwi[thorn] womb, Goth. qi[thorn]us belly, womb.]
1. (Zool.) A cephalopod of the genus Sepia, having an internal shell, large eyes, and ten arms furnished with denticulated suckers, by means of which it secures its prey. The name is sometimes applied to dibranchiate cephalopods generally. [1913 Webster]
Note: It has an ink bag, opening into the siphon, from which, when pursued, it throws out a dark liquid that clouds the water, enabling it to escape observation. [1913 Webster]
2. A foul-mouthed fellow. "An you play the saucy cuttle with me." --Shak. [1913 Webster]