Sleeping; hence, at rest; not in action; as dormant passions.

Being in a sleeping posture; as the lion dormant, in heraldry.

Neglected; not used; as a dormant title; dormant privileges.

Concealed; not divulged; private.

Leaning; inclining; not perpendicular; as a dormant window, supposed to be so called form a beam of that name. This is now written dormer or dormar.

A beam; a sleeper.