American Dictionary of the English Language

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TEN'TACLE, noun [Latin tentacula.] A filiform process or organ, simple or branched, on the bodies of various animals of the Linnean class Vermes, and of Cuvier's Mollusca, Annelides, Echinodermata, Actinia, Medusae, Polypi, etc. either an organ of feeling, prehension or motion, sometimes round the mouth, sometimes on other parts of the body.