Flatter (flătt&etilde_;r), n. 1. One who, or that which, makes flat or flattens.
[1913 Webster]

2. (Metal Working) (a) A flat-faced fulling hammer. (b) A drawplate with a narrow, rectangular orifice, for drawing flat strips, as watch springs, etc.
[1913 Webster]

Flatter, v. i. To use flattery or insincere praise.
[1913 Webster]

If it may stand him more in stead to lie,
Say and unsay, feign, flatter, or adjure. Milton.
[1913 Webster]