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Definition of Lead line
1. Noun. (nautical) plumb line for determining depth.
Exact synonyms: Sounding Line
Category relationships: Navigation, Sailing, Seafaring
Generic synonyms: Perpendicular, Plumb Line
Terms within: Sounding Lead
Category relationships: Navigation, Sailing, Seafaring
Generic synonyms: Perpendicular, Plumb Line
Terms within: Sounding Lead
Medical Definition of Lead line
1. Deposits of lead sulfide in the gingiva in areas of chronic inflammation. (05 Mar 2000)