(logic, computing) A logical connective joining two or more predicates that yields the logical value "true" when at least one of the predicates is true.

Joins two alternatives to mean either or both; indicates that inclusive or is meant where or alone might be taken to mean exclusive or.

(humorous) Used to encourage someone to attend an event.

Something unspecified or indeterminate, or whose name is forgotten or immaterial.

(idiomatic, chiefly in the negative, with can't/cannot) To understand even minimally. / To determine to be good or bad.

Otherwise or as an alternative.

(idiomatic) No matter what (implies an unspecified threat).

In a civilian aircraft: a transponder that responds by sending a code identifying itself.

A female given name from Latin. Mainly used in the U.S.A. in the latter half of the 19th century. / Italian spelling of Auer, in South Tyrol, northern Italy.

Roughly, approximately.