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Pronunciation varies by accent · noun
Any of various species of marine bivalve shells formerly belonging to the genus Avicula (no longer accepted), now a synonym of Pteria, with species assigned to several genera, in which the hinge border projects like a wing..
Use wing-shell when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Wing-shell means Any of various species of marine bivalve shells formerly belonging to the genus Avicula (no longer accepted), now a synonym of Pteria, with species assigned to several genera, in which the hinge border projects like a wing..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use wing-shell where its definition matches the intended context.
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