(british slang): to consume a container of alcohol in such a way that your chin faces the ceiling, resulting in such rapid consumption that breathing is not possible; to chug or pound a drink.
v. chinned, chin·ning
v. tr.
To hurl excessive quantities of blank-firing grenades into a room before entering.
Named after a CQB (Close Quarter Battle) instructor (Mr. Chin) who, when playing airsoft, excessively uses blank-firing grenades to clear each and every room he encounters to avoid the direct engagement of a target.