Now updated for CSW19. New words, if any, and new inflections of existing words, are shown in red.
| amphipod | a crustacean of the largely marine order Amphipoda, that includes e.g. sand-hoppers. |
| argulus | a genus of copepod Crustacea, parasitic of fishes; a fish louse > ARGULI. |
| barnacle | a cirripede crustacean that adheres to rocks and ship bottoms. |
| barnacled | covered with barnacles. |
| brachyuran | any decapod crustacean of the group (formerly suborder) Brachyura, which includes the crabs. |
| branchiopod | any of a subclass of Crustacea with numerous flattened, leaf-shaped, lobed swimming-feet. |
| camaron maron | a kind of freshwater crustacean similar to a crayfish. |
| cancroid | a member of the crab family. |
| cirrhipede cirrhopod cirriped cirripede | a barnacle or other parasitic marine crustacean. |
| cladoceran | a small crustacean, aka water flea. |
| copepod | a shrimp-like crustacean. |
| crab | a marine crustacean; (verb) to obstruct, frustrate > CRABS, CRABBING, CRABBED. |
| crablike | like a crab. |
| crawdad crawdaddy | a crayfish. |
| crawfish | any crustacean of the family Astacidae, resembling the lobster; (verb) to retreat or back out, especially from a position in which one is being challenged > CRAWFISHES, CRAWFISHING, CRAWFISHED. |
| cray crayfish | a CRAWFISH. |
| crevette | a shrimp or prawn. |
| crustacea | a large class of arthropod animals with hard shells. |
| crustacean | a member of the Crustacea. |
| cumacean | a small crustacean living on the seabed. |
| cyclops | a genus of freshwater copepods; pl. CYCLOPS; a one-eyed monster; pl. CYCLOPES. N.B. no CYCLOP*. |
| cyprid cypris | any member of the Cypris genus of freshwater ostracod crustaceans. Pl CYPRIDS, CYPRIDES. |
| daphnia daphnid | any member of the crustacean genus Daphnia, water-fleas. |
| decapod | any ten-legged crustacean, including shrimps and lobsters. |
| decapodal decapodan decapodous | relating to decapods, an order of crustaceans with ten feet, that includes crabs and lobsters. |
| euphausid euphausiid | one of a genus of shrimplike crustaceans. |
| gilgie jilgie | a YABBY, a small freshwater crayfish. |
| gribble | a small crustacean which destroys submerged timber. |
| isopod isopodan | any crustacean of the order Isopoda, that includes woodlice etc. |
| isopodous | of or like an ISOPOD, a kind of small crustacean. |
| jilgie | see GILGIE. |
| koura | a New Zealand crayfish. |
| krill | a small shrimplike creature eaten by whales > KRILLS. |
| langostino langouste langoustine | the spiny lobster. |
| limuloid | the king crab. |
| lobster | a large strong-clawed edible crustacean; (verb) to fish for lobsters > LOBSTERS, LOBSTERING, LOBSTERED. |
| macropod | any one of a group of crabs remarkable for the length of their legs, aka spider crab. |
| macrural macrurous | pertaining to, like or belonging to the crustacean division including lobsters, prawns, etc. Cf. MACRURAN. |
| macruran macruroid | a creature belonging to the crustacean division including lobsters, prawns > MACRURANS. |
| maron | see CAMARON. |
| megalops | the larval stage of a crab > MEGALOPSES. |
| mudbug | a crayfish. |
| mysid | a small crustacean. |
| nauplial | of or like a NAUPLIUS, the larval form of certain crustaceans. |
| nauplioid | shaped like a NAUPLIUS, a larval form in crustaceans. |
| nauplius | a larval form in crustaceans > NAUPLII. |
| ochidore | Charles Kingsley's name (not otherwise known) for a shore-crab. |
| oniscoid | like a woodlouse. [Gk. oniscos, little ass]. |
| ostracod ostracode | a minute freshwater crustacean with a bivalve carapace. |
| ostracodan | one of a class of minute crustacea with bivalve shells. |
| pagurian pagurid | a member of the hermit crab family. |
| partan | an edible British crab. [Perh. ult. f. OIr. partaing, red]. |
| phyllopod | one of an order of crustaceans whose swimming and respiratory appendages resemble leaves. |
| pleon | the abdomen of a crustacean, bearing the swimming legs > PLEONS. [Gk. plein, to swim]. |
| prawn | a small edible crustacean; (verb) to fish for prawns. |
| scampi | crustaceans of the genus Nephrops, often fried in breadcrumbs > SCAMPIS or SCAMPIES. [Ital. scampi, pl. of scampo, shrimp]. |
| schizopod | one of the Schizopoda, shrimp-like crustaceans. |
| shrimp | a small edible crustacean; (verb) to fish for shrimps > SHRIMPS, SHRIMPING, SHRIMPED. |
| shrimpy | full of shrimps > SHRIMPIER, SHRIMPIEST. |
| sowbug | a WOODLOUSE. |
| spatfall | a mass of planktonic shellfish larvae which has settled on the seabed prior to developing into adults. |
| squilla | a mantis shrimp of genus Squilla > SQUILLAE or SQUILLAS. |
| woodlouse | any small isopod crustacean of the suborder Oniscoidea > WOODLICE. |
| xiphosuran | of the Xiphosura, an order of Arthropoda of which the only survivors are the king crabs. |
| yabbie yabby | a small freshwater crayfish: YABBIES. |