Found 2 items, similar to sliding keel.
English → English (WordNet) Definition: sliding keel sliding keel n : a retractable fin keel used on sailboats to prevent drifting to leeward [syn: centerboard, centreboard, drop keel]
English → English (gcide) Definition: Sliding keel Sliding \Slid"ing\, a. 1. That slides or slips; gliding; moving smoothly. [1913 Webster] 2. Slippery; elusory. [Obs.] [1913 Webster] That sliding science hath me made so bare. --Chaucer. [1913 Webster] Sliding friction (Mech.), the resistance one body meets with in sliding along the surface of another, as distinguished from rolling friction. Sliding gunter (Naut.), a topmast arranged with metallic fittings so as to be hoisted and lowered by means of halyards. Sliding keel (Naut), a movable keel, similar to a centeboard. Sliding pair. (Mech.) See the Note under Pair, n., 7. Sliding rule. Same as Slide rule, under Slide, n. Sliding scale. (a) A scale for raising or lowering imposts in proportion to the fall or rise of prices. (b) A variable scale of wages or of prices. (c) A slide rule. Sliding ways (Naut.), the timber guides used in launching a vessel. [1913 Webster]