to headbang

source code

An extension cord.

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

(idiomatic) A piece of cake; an extremely simple thing, something trivial, a cinch, easy as pie.

朝飯前: A piece of cake; an extremely simple thing.