'alternate' definitions:

Definition of 'alternate'

From: WordNet
adjective
Every second one of a series; "the cleaning lady comes on alternate Wednesdays"; "jam every other day"- the White Queen
adjective
Serving or used in place of another; "an alternative plan" [syn: alternate, alternative, substitute]
adjective
Occurring by turns; first one and then the other; "alternating feelings of love and hate" [syn: alternate(a), alternating(a)]
adjective
Of leaves and branches etc; first on one side and then on the other in two ranks along an axis; not paired; "stems with alternate leaves" [ant: opposite, paired]
noun
Someone who takes the place of another person [syn: surrogate, alternate, replacement]
verb
Go back and forth; swing back and forth between two states or conditions [syn: alternate, jump]
verb
Exchange people temporarily to fulfill certain jobs and functions
verb
Be an understudy or alternate for a role [syn: understudy, alternate]
verb
Reverse (a direction, attitude, or course of action) [syn: interchange, tack, switch, alternate, flip, flip- flop]
verb
Do something in turns; "We take turns on the night shift" [syn: alternate, take turns]

Synonyms of 'alternate'

From: Moby Thesaurus