The first letter of the English alphabet, called a and written in the Latin script.

The ordinal number first, derived from this letter of the English alphabet, called a and written in the Latin script.

A rank, normally the highest rank, on any of various scales that assign letters. / (education) The highest letter grade assigned (disregarding plusses and minuses).

Ace. (including in card games) / Acre. / Adult; as used in film rating. / Ammeter. / (physics) Angstrom. / Answer. / (sports) An assist. / (sexuality) Asexual. / (UK, London) Arsehole. / (weaponry) Atom.

(weaponry) Atom; atomic.

(idiomatic, Southern US) Under no circumstances; absolutely not.

(idiomatic, Southern US) Under no circumstances; absolutely not.

Synonym of cock a snook (“perform disrespectful gesture with thumb against the nose”)

A commune of Vietnam

(archaic, slang) To hoax or entrap somebody, so as to get some sport out of them.