1. burial or discarding at sea.
2. complete rejection or ruin.
Pronunciation: (dēp'siks'), [key]
1. to throw overboard.
2. to get rid of; abandon; discard.
3. to reject, negate, or ruin: The team deep-sixed the manager's attempt to call Sunday practice.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.