To have sexual intercourse for the first time.

(conjunctive) Opposite of what had earlier been expected or assumed.

(idiomatic, informal) To eat excessively.

A stringed instrument playing technique performed (especially on guitar) by sharply bringing a fretting-hand finger down on the fingerboard behind a fret, causing a note to sound.

Slowly and steadily, without rushing.

(idiomatic) An offer from one side in a transaction with terms so attractive that the other side is almost guaranteed to accept.

(transitive, idiomatic, US) To supervise a group of people and their work.

(chemistry, physics) A chip, combining semiconductor and microfluidics technologies, capable of handling and analyzing very small quantities of sample, especially of bodily fluids for medical purposes.

(idiomatic) A situation where either choice results in a negative outcome.

(idiomatic) To be particularly, especially uncannily, observant; a perceived ability to see in all directions at once.