barcode

noun

1. Any set of machine-readable parallel bars or concentric circles, varying in width, spacing, or height, encoding information according to a symbology.
2. A portion of a gene that identifies a particular species.
3. (slang)An instance of self-harm, typically with multiple parallel cuts along a line, similar in form to a machine barcode.

verb

1. (transitive)To apply a barcode (machine-readable code) to.