jetty

noun, plural jet·ties.

1. a pier or structure of stones, piles, or the like, projecting into the sea or other body of water to protect a harbor, deflect the current, etc.
2. a wharf or landing pier.
3. the piles or wooden structure protecting a pier.
4. Also jutty. an overhang, as of an upper story beyond a lower.

verb (used with object), jet·tied, jet·ty·ing.

5. to construct (part of a building) so that it projects beyond lower construction; jutty.

adjective

1. made of jet.
2. resembling jet, especially in color; of a deep black.

noun plural -ties

1. a structure built from a shore out into the water to direct currents or protect a harbour
2. a landing pier; dock

adjective

1. of or resembling jet, esp in colour or polish

n.

early 15c., from Old French jetee “a jetty, a projecting part of a building,” also “a throw,” noun use of fem. past participle of jeter “to throw” (see jet (v.)). Notion is of a structure “thrown out” past what surrounds it.