WordNet: perpendicular, plumb line
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
- hypernym cord
- hyponym lead line, sounding line
- hyponym plumb rule
perpendicular
- (suomi) luotisuora (synonyymi)
plumb line
- (suomi) luotiviiva (synonyymi)