ˈ ̷ ̷ˌ ̷ ̷ noun
Etymology: base (III) + plate
1. : a plate that serves as a base or support: as
a. : the foundation plate of heavy machinery (as of a steam engine) : bedplate
b. : the steel or cast-iron plate on which a column rests
c. : the metal plate that serves as a base and firing support for the breech end of a mortar
2.
a. : the portion of an artificial denture in contact with the jaw
b. : the sheet of plastic material used in the making of trial denture plates