(nautical, obsolete) close quarters

(rare, mathematics, of a set) Being the closure of its interior.

Used other than figuratively or idiomatically: see close to, the, wind. / Near a limit of feasibility or compliance with law or morality.

Used other than figuratively or idiomatically: see close to, the, wind. / (nautical) In a direction almost opposite to that from which the wind is blowing

(mathematical analysis) A ball which contains its boundary, i.e., a ball which is a closed set.

A standard formula to end a letter. / (transferred) A standard formula to end a speech. / (US) A form in an authority filled to formally document the closing a case.

Near spatially or temporally.

Alternative form of close season

plural of closed season

(education) A campus that forbids unauthorized entry or exit during the school day.