蛄

mole cricket (esp. the Oriental mole cricket, Gryllotalpa orientalis)

おけら／オケラ only; Colloquial

being penniless; being broke

crayfish (esp. the Japanese crayfish or red swamp crayfish); crawfish

caddisfly; caddis fly (any moth-like insect of the order Trichoptera)

stonefly (any insect of order Plecoptera, esp. those of family Perlidae)

mantis shrimp (any marine crustacean of order Stomatopoda, esp. the species Oratosquilla oratoria); mantis crab; squilla

Architecture

edge of a gabled roof; verge

being a jack of all trades and master of none

being a jack of all trades and master of none

Japanese mud shrimp (Upogebia major)

red swamp crayfish (Procambarus clarkii)

Japanese crayfish (Cambaroides japonicus)

Christmas cactus; crab cactus

Trichoptera (the order of insects comprising the caddisflies)

C clamp; G clamp

Rare term

lobster