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Search Result for "plumb line":
Wordnet 3.0

NOUN (1)

1. a cord from which a metal weight is suspended pointing directly to the earth's center of gravity; used to determine the vertical from a given point;
[syn: plumb line, perpendicular]


The Collaborative International Dictionary of English v.0.48:

Plumb \Plumb\ (pl[u^]m), n. [F. plomb, L. plumbum lead, a leaden ball or bullet; cf. Gr. mo`lybos, mo`libos, mo`lybdos. Cf. Plummet, Plunge.] A little mass or weight of lead, or the like, attached to a line, and used by builders, etc., to indicate a vertical direction; a plummet; a plumb bob. See Plumb line, below. [1913 Webster] Plumb bob. See Bob, 4. Plumb joint, in sheet-metal work, a lap joint, fastened by solder. Plumb level. See under Level. Plumb line. (a) The cord by which a plumb bob is suspended; a plummet. (b) A line directed to the center of gravity of the earth. Plumb rule, a narrow board with a plumb line, used by builders and carpenters. [1913 Webster]
WordNet (r) 3.0 (2006):

plumb line n 1: a cord from which a metal weight is suspended pointing directly to the earth's center of gravity; used to determine the vertical from a given point [syn: plumb line, perpendicular]