köken: From Gras (“grass”) + Hüpfer (“hopper”). A chiefly northern word, partly from Middle Low German grashüppel (and variants). Not attested in continental West Germanic before the 16th century, but considering Old English græshoppa perhaps older. Compare the similar motivation in German Heuschrecke.
köken: Inherited from Middle French criquet, from Old French criket, from Old French criquer (“to crack, creak”), of Germanic origin. Compare Dutch kriek, krekel (“cricket”), English creak.
köken: From earlier aligusta, most likely from Latin locusta (probably through a Vulgar Latin form lacusta), with partial concretion or agglutination and false deglutination of the preceding article. Compare the borrowed doublet locusta.
köken: Later 19th century, at first in the form hummer. Ultimately from Old Norse humarr (“lobster”). The immediate source may be either German Hummer (16th c.) or directly from Dano-Norwegian hummer as many lobsters were caught off the coast of Norway.