debauch

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To corrupt morally.
2. v. To lead away from excellence or virtue.
3. v. To reduce the value, quality, or excellence of; debase. See Synonyms at corrupt.
4. v. Archaic To cause to forsake allegiance.
5. v. To indulge in dissipation.
6. n. The act or a period of debauchery.
7. n. An orgy.

Century Dictionary and Cyclopedia

1. To corrupt the morals or principles of; entice into improper conduct, as excessive indulgence, treason, etc.; lead astray, as from morality, duty, or allegiance: as, to debauch a youth by evil instruction and example; to debauch an army.
2. Specifically, to corrupt with lewdness; bring to be guilty of unchastity; deprave; seduce: as, to debauch a woman.
3. To lower or impair in quality; corrupt or vitiate; pervert.
4. Figuratively, to spoil; dismantle; render unserviceable.
5. To riot; revel.
6. n. Excess in eating or drinking; intemperance; drunkenness; gluttony; lewdness.
7. n. An act or a period of debauchery. Synonyms Revel, Orgy, etc. See carousal.

Wiktionary

1. n. An act of debauchery.
2. n. An orgy.
3. v. transitive to morally corrupt (someone); to seduce
4. v. transitive to debase (something); to lower the value of (something)

GNU Webster's 1913

1. v. To lead away from purity or excellence; to corrupt in character or principles; to mar; to vitiate; to pollute; to seduce
2. n. Excess in eating or drinking; intemperance; drunkenness; lewdness; debauchery.
3. n. An act or occasion of debauchery.

WordNet 3.0

1. n. a wild gathering involving excessive drinking and promiscuity
2. v. corrupt morally or by intemperance or sensuality