(rail transport, also used adverbially) Of a steam locomotive with a tender (a tender locomotive), when it is operating in reverse, with the tender leading.

Used other than figuratively or idiomatically: see first, night. / The first public performance of a play or other show, normally assumed to be held in the evening. / The first night after marriage.

The dog belonging to the President of the United States of America

The event when one person first encounters another person and forms a mental image of them. ᵂᵖ

Of first resort. / Of prime quality or importance. / At the lowermost supervisory level.

(blackjack) A form of hole carding in which a player peeks at the hole card as the dealer checks it.

Used to indicate that a statement, though not necessarily entirely accurate or without exceptions, is good enough for basic or preliminary purposes; more or less; basically.

As the first step or stage; first.

plural of first night

plural of first declension