(biochemistry) proline

(gambling, idiomatic) Snake eyes: two ones, after rolling two dice. / (derogatory, idiomatic) Wearing two layers of hitoemono (unlined summer-weight kimono).

(entertainment) spotlight (light shed by a spotlight)

(sex) Short for ピンクローター (pinku rōtā, “pink love egg”): (in Japan, the love egg is prototypically pink.)

from the best to the worst, from the top to the bottom, from the beginning to the end

comedian who is not part of a unit

pinpoint

hairpin

from the beginning to the end / variously; with different types

hairpin / (computing) pinning (attaching a UI item to another item)