01 n. That which constricts, draws together, or contracts.
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1.
That which constricts, draws together, or contracts.
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2.
A muscle which contracts or closes an orifice, or which compresses an organ; a sphincter.(Anat.)
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3.
A serpent that kills its prey by inclosing and crushing it with its folds; as, the boa constrictor.(Zool.)