Lethe

Le"the (lē"thē), n. [L., fr. Gr. lh`qh, prop., forgetfulness; akin to lanqa`nesqai to forget, lanqa`nein to escape notice.] 1. (Class. Myth.) A river of Hades whose waters when drunk caused forgetfulness of the past.

2. Oblivion; a draught of oblivion; forgetfulness.

Le"the (lē"thē or lēth), n. [See Lethal.] Death.[Obs.] Shak.