D defs.my
Entry 1 sense Webster, 1913

Dormant

/dôr'-mənt/ · Dor·mant · IPA /ˈdɔɹmənt/
01 n. A large beam in the roof of a house upon which portions of the other timbers rest or “ sleep.”
  1. 1.
    A large beam in the roof of a house upon which portions of the other timbers rest or “ sleep.”(Arch.)