1Resembling or suggestive of a drum, especially in sound; hollow.
2Of earth, rock, etc.: hollow-sounding when tapped or trodden upon, frequently with the implication of being unsteady or unsafe. Now chiefly Australian.
3Characterized by the playing of a drum or drums; in which drumming features prominently.
Mid 17th century; earliest use found in John Owen (1616–1683), theologian and Independent minister. From drum + -y.