plural of Fock space

A simple skullcap or cervelliere which protects only the top of the head, in contrast to a greathelm or other helmet that would protect the whole head.

(intransitive, idiomatic, informal) To take some action intended to defy a source of oppression such as globalization, commercialization, big business or government.

(pathology) The process which causes an infarct. / (pathology) An infarct.