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

(idiomatic) On a very tight budget; with few resources or little money.

(idiomatic) A skinny, malnourished person or animal.

(physics) The speed at which sound is propagated through some medium under specified conditions.

(intransitive) To expand in the manner of branches. / (intransitive, idiomatic) To expand one's interests or activities in a new direction.

In a sequence. / Ready, prepared; orderly; tidy. / (idiomatic, formal) In accordance with the procedural rules governing formal meetings of a deliberative body. / (idiomatic) Appropriate, worthwhile.

(not comparable, idiomatic, with to) Emphasizes that what follows immediately is the purpose of the preceding or the beyond.

(historical) One French franc before January 1960, when it was devalued to 1/100 of its original value and replaced by the new franc, worth 100 old francs.

(idiomatic) A person or persons considered to be very sexually attractive.

(slang) To insult (someone) by showing them the back of one's fist with the middle finger extended.