A buoy fitted with a warning bell that is activated by the movement of the waves.
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bellbuoy — … Useful english dictionary
buoy — I (New American Roget s College Thesaurus) n. float; marker; bellbuoy, lifebuoy. See navigation, indication. II (Roget s IV) n. Syn. float, drift, floating marker; see float 1 . Types of buoys include: bell, can, life, nun, light, whistling. III… … English dictionary for students
buoy — 1. noun a mooring buoy Syn: float, marker; bellbuoy, nun buoy, sonobuoy 2. verb the party was buoyed by an election victory Syn: cheer, cheer up, hearten, rally, invigorate, uplift, lift, encourage, stimu … Thesaurus of popular words