The Collaborative International Dictionary
Drift epoch
Drift \Drift\, a.
That causes drifting or that is drifted; movable by wind or
currents; as, drift currents; drift ice; drift mud.
--Kane.
Drift anchor. See Sea anchor, and also Drag sail, under Drag, n.
Drift epoch (Geol.), the glacial epoch.
Drift net, a kind of fishing net.
Drift sail. Same as Drag sail. See under Drag, n.