pontoon
/pɒnˈtuːn/ noun
Forms pontoons
- noun A flat-bottomed boat or other floating structure used as a buoyant support for a temporary bridge, dock or landing stage.
- noun (by extension) A bridge with floating supports.
- noun A box used to raise a sunken vessel.
- noun A float of a seaplane.
- noun A lighter or barge used for loading or unloading ships.
- noun (card games, uncountable) A card game in which the object is to obtain cards whose value adds up to, or nearly to, 21 but not exceed it.
- noun (card games, countable) A two-card hand totalling 21 in this game.
Synonyms
Etymology
Borrowed from Middle French ponton, from Old French ponton, from Latin pontō, pontōnem (“ferryboat”), from pōns (“bridge”).
Probably from vingt-un, an obsolete variant of vingt-et-un (“twenty-one”), from French.
Webster’s 1913
- noun A wooden flat-bottomed boat, a metallic cylinder, or a frame covered with canvas, India rubber, etc., forming a portable float, used in building bridges quickly for the passage of troops.
- noun A low, flat vessel, resembling a barge, furnished with cranes, capstans, and other machinery, used in careening ships, raising weights, drawing piles, etc., chiefly in the Mediterranean; a lighter. Pontoon bridge, a bridge formed with pontoons.
Etymology [F. ponton (cf. It. pontone), from L. ponto, - onis, fr. pons, pontis, a bridge, perhaps originally, a way, path: cf. Gr. path, pathi, panthan. Cf. Punt a boat.]
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “pontoon”, CC BY-SA 4.0. Details