A document presented at customs containing information about goods imported or exported

(idiomatic, humorous, informal) Synonym of get one's knickers in a twist

US standard spelling of centre of mass.

The inner sanctum of the Temple in Jerusalem. / (by extension) The most sacred place within a sacred building. / (informal, humorous) One's private retreat, inner sanctum.

plural of office mate

(chemistry) A thermoplastic polyether resin whose repeat unit is derived from hydroquinone

A form of challenge, in the same spirit as a medieval knight throwing down his gauntlet.

(informal) to censor inappropriate spoken words by obscuring them with the sound of a bleep

A dark yellow, acrid oil, obtained from the seeds of plants of the genus Croton, once used as a drastic purgative.

(transitive, Britain) To acquire with difficulty, as by thorough scrutiny. / (transitive) To get (something or someone) out of an entrenched position.