US spelling of centre of symmetry

US standard spelling of centre of buoyancy.

US standard spelling of centre of effort.

(transitive) To appear to be a more subtle negotiator than; to outsmart.

(music) A form of pipe organ in which the air is generated by moving water.

Alternative form of have the world by the tail

(obsolete, inorganic chemistry) butter of antimony, antimony trichloride

(obsolete, inorganic chemistry) antimony trioxide

simple past tense and past participle of medical out

(informal) To discharge (especially from a police force or military) for medical reasons; to discharge (a person) because they are not fit for duty. (Chiefly used in the past tense.)