flatten

Definitions

• (transitive) To make something flat or flatter.
• (reflexive) To press one's body tightly against a surface, such as a wall or floor, especially in order to avoid being seen or harmed.
• (transitive) To knock down or lay low.
• (intransitive) To become flat or flatter; to plateau.
• (intransitive) To be knocked down or laid low.
• (music) To lower by a semitone.
• To make vapid or insipid; to render stale.
• (programming) To reduce (a data structure) to one that has fewer dimensions, e.g. a 2×2 array into a list of four elements.
• (computer graphics) To combine (separate layers) into a single image.