The base after home plate in a counter-clockwise path around a baseball infield.
Completion of the first phase of an activity.
Kissing, regarded as the first phase of a sexual relationship.
The betting spot located immediately to the left of the dealer, which is first to receive cards and first to act.
The batsman who opens the batting.
The main goalkeeper of a team, so-called because they wear the number 1 on the back of their kit.
The most important person, the one who is in charge.
Urine; urination.
A large town where theatrical performances may expect to achieve success.
Used other than figuratively or idiomatically: see number, one.
Oneself, being considered foremost, as by an egoist.
Someone who is top of a ranking, who is ranked first.
The single that has sold the most in a given period.
A first lieutenant.
First; foremost; best, often used after its headword.