(now rare, archaic) To attack or blow a hole in (something) with a petard.

A male given name from Ancient Greek. / The leading Apostle in the New Testament. / (biblical) The epistles of Peter in the New Testament of the Bible, 1 Peter and 2 Peter attributed to St. Peter.

(botany) One of the component parts of the corolla of a flower. It applies particularly, but not necessarily only, when the corolla consists of separate parts, that is when the petals are not connately fused. Petals are often brightly colored.

To spread out from, like the petals of a flower

(idiomatic) Hurt or destroyed by one's own plot or device intended for another; "blown up by one's own bomb".

(nautical) A blue signal flag with a white rectangle in the centre, signifying "P". When flown alone, indicates that a ship is ready to sail, requiring all crew members and passengers to return on board.

(card games, intransitive) In whist, to play a blue peter.

A formal, written request made to an official person or organized body, often containing many signatures.

(transitive) To make a request to, commonly in written form.

(especially of a woman) fairly short and of slim build. / (clothing) of small size. / Small, little; insignificant; petty.