A barcode: a set of machine-readable lines of varying width placed on products to represent pricing or other such data.

ZIP code (US postal code)

chord progression

(computing) kuten code, the 4-digit codepoint of a character according to its location in JIS encodings

(computing) character encoding

隻: boats / 石: (slang) transistors

堰: weir, embankment / 咳: cough / 関: frontier pass, close, relation / 席: seat, mat, banquet / 積: accumulate, store up, amass / 籍: record, register, list, census / 舎: house, dwelling, dwell, reside

関: Seki (a city in Gifu Prefecture, Japan); a surname

cutting

an enemy / an opponent, a competitor / (historical) the other party in a lawsuit / 的: (historical) in the red-light district, a term of reference used between prostitutes and customers