(US, New York, informal) A police officer's report detailing a crime reported by a civilian.

The cardinal number immediately following fifty and preceding fifty-two.

The cardinal number immediately following seventy and preceding seventy-two.

The cardinal number immediately following forty and preceding forty-two.

(set theory) The second of the transfinite cardinal numbers; according to the continuum hypothesis, it corresponds to the number of real numbers.

(idiomatic) The place where one begins; a lack of progress.

Alternative form of one-upmanship

Occurring once, independent of any pattern; one-time. / Singular; unique; special; remarkable.

(idiomatic) Something that is done, created, etc. only once, and often quickly, simply, or improvisationally. / Something unique and remarkable.

(music) A style of drumming, prevalent in reggae and attributed to Winston Grennan, in which the snare and bass play on the same beat.