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

a letter, a character (symbol for a sound or a word) / (linguistics) script, writing system / (specific to Japanese) a written mora, a kana / writing in general, written words

a letter or character (symbol for a sound or a word) / (linguistics) script, writing system / (specific to Japanese) a written mora, a kana / writing in general, written words

(2channel slang) someone who immediately posts questions instead of doing basic research

Unicode

Concord (the capital city of New Hampshire) / Concord (a city in California) / Concord (a city in Massachusetts) / Concord (a city in Kentucky) / Concord (a city in North Carolina)

dress code

QR code