Any species of ear-shaped shells of the genus Haliotis; an abalone(noun)
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Use "sea-ear" in a sentence
"The shells of the awabi, or 'sea-ear,' which reaches a surprising size in these western waters, are converted by skilful polishing and cutting into wonderful dishes, bowls, cups, and other articles, over whose surfaces the play of iridescence is like a flickering of fire of a hundred colours. º18"