plumbing

(noun) utility consisting of the pipes and fixtures for the distribution of water or gas in a building and for the disposal of sewage. Synonyms: plumbing system.

(noun) the occupation of a plumber (installing and repairing pipes and fixtures for water or gas or sewage in a building). Synonyms: plumbery.

(noun) measuring the depths of the oceans. Synonyms: bathymetry.

(verb) measure the depth of something. Synonyms: plumb.

(verb) weight with lead. Synonyms: plumb.

(verb) examine thoroughly and in great depth. Synonyms: plumb.

(verb) adjust with a plumb line so as to make vertical. Synonyms: plumb.