a night owl (idiomatic)

(programming) boolean data type

(programming) Synonym of 論理型 (ronri gata, “boolean data type”)

(programming) character data type

(programming) Synonym of 文字型 (mojigata, “character data type”)

format, book size / size of a sheet of paper used for ukiyoe

(slang) "mass-production-type", describing a girl who follows fast fashion trends; but also used to describe a fashion of bright pink cutesy clothing, doll-like makeup, brunette hair, etc. often treated as an antithesis to 地雷系

an unused item

a pitch accent pattern in Japanese where the first mora is high, followed by an immediate downstep: the first syllable has high pitch and all subsequent syllables have low pitch

blood type-based horoscope