sea urchin
Alternative form of orthodoxize
(especially (Britain)) a spanner with a ring-shaped jaw with internal serrations which grip onto a nut or bolt.
Any of many marine echinoderms, of the class Echinoidea, commonly found in shallow water, having a complex chewing structure named Aristotle's lantern.
plural of Comberbach
サンゴ礁の近くでシュノーケリングをしていると、鋭い棘で岩にしがみついているウニを見つけた。
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