Illustration of cuttlefish
cuttlefish
noun
cut·tle·fish ˈkə-tᵊl-ˌfish 
: any of various marine cephalopod mollusks (order Sepioidea, especially genus Sepia) having eight short arms and two usually longer tentacles and differing from the related squid in having a calcified internal shell
Example Sentences
Recent Examples on the Web This is especially true given that other researchers have published findings of REM-like behavior in distantly related animals like cuttlefish. 
John Timmer, Ars Technica, 8 Aug. 2022 REM sleep has also been observed in a limited number of animals, including cuttlefish and nonhuman primates, as well as dogs and birds. Eric Niiler, WSJ, 8 Aug. 2022 These wines were created to be enjoyed with food—consider cappellietti pasta with white cuttlefish ragu and mantis shrimp, or asparagus salad with broad beans, peas, saltwort with a cream of almonds and hazelnuts. Tom Mullen, Forbes, 3 July 2022 Squid, like octopuses and cuttlefish, camouflage to match their substrates. Rafil Kroll-zaidi, Harper’s Magazine , 22 June 2022 Crabs stop feeding, cuttlefish change colors, damselfish are more easily caught. Ed Yong, The Atlantic, 13 June 2022 The pair took a gondola across the Grand Canal to the nearly 1,000-year-old Rialto fish market to pick up cuttlefish (seppia in Italian), a cousin of the squid and the octopus. Janelle Davis, CNN, 1 May 2022 The avante-garde Italian designer has penned a number of disruptive concepts, including a spectacular 207-foot superyacht that was somewhat strangely inspired by a cuttlefish. Rachel Cormack, Robb Report, 26 May 2022 Melanin is found in most living creatures, and when it is studied scientifically, researchers usually use the ink of Sepia officinalis, the common cuttlefish. A.h. Reaume, Longreads, 22 Aug. 2017 See More
John Timmer, Ars Technica, 8 Aug. 2022 REM sleep has also been observed in a limited number of animals, including cuttlefish and nonhuman primates, as well as dogs and birds. Eric Niiler, WSJ, 8 Aug. 2022 These wines were created to be enjoyed with food—consider cappellietti pasta with white cuttlefish ragu and mantis shrimp, or asparagus salad with broad beans, peas, saltwort with a cream of almonds and hazelnuts. Tom Mullen, Forbes, 3 July 2022 Squid, like octopuses and cuttlefish, camouflage to match their substrates. Rafil Kroll-zaidi, Harper’s Magazine , 22 June 2022 Crabs stop feeding, cuttlefish change colors, damselfish are more easily caught. Ed Yong, The Atlantic, 13 June 2022 The pair took a gondola across the Grand Canal to the nearly 1,000-year-old Rialto fish market to pick up cuttlefish (seppia in Italian), a cousin of the squid and the octopus. Janelle Davis, CNN, 1 May 2022 The avante-garde Italian designer has penned a number of disruptive concepts, including a spectacular 207-foot superyacht that was somewhat strangely inspired by a cuttlefish. Rachel Cormack, Robb Report, 26 May 2022 Melanin is found in most living creatures, and when it is studied scientifically, researchers usually use the ink of Sepia officinalis, the common cuttlefish. A.h. Reaume, Longreads, 22 Aug. 2017 See More Word History
Etymology
Middle English cotul + English fish
First Known Use
1591, in the meaning defined above
Kids Definition
cuttlefish
noun
cut·tle·fish ˈkə-tᵊl-ˌfish
: a sea animal with ten arms that is related to the squid and octopus