Short for 安全牌 (anzenpai).

(mahjong) a tile that one can safely discard, as it cannot become an opponent's advantage / (slang, by extension) a safe choice

Alternative spelling of パイスラッシュ (pai-surasshu)

(mahjong) flower tile (included in mahjong sets, but not used in Japanese mahjong gameplay)

(mahjong) wind tile

(mahjong) being one tile away from completing a hand

(mahjong) to be one tile away from completing a hand

(computing) a hotkey

(computing) a shortcut key

a keyframe (complete video frame)