(idiomatic, often business) To reveal confidential information, especially details of one's business operations.

Of or pertaining to Christian congregations and other Christian groups that accept gay men and women, bisexuals, and transgender people.

(cricket) The first batsman of an innings. / (cricket) One of the first two batsmen of an innings. / (figuratively) The first of a series, usually a chronological series.

plural of opening batsman

A wound which pierces the skin (and/or exterior bones), so as to bare flesh and/or internal organs.

plural of open door

(idiomatic) To lead to opportunities or (social) advantages.

plural of open valley

(education) Referring to exams in which external resources such as textbooks, glossaries, study notes, calculators, etc. may be used.

(idiomatic) Something of which salient aspects are obvious or easily interpreted.