Quick definitions from WordNet (alternate)
▸ noun: someone who takes the place of another person
▸ verb: exchange people temporarily to fulfill certain jobs and functions
▸ verb: do something in turns
▸ verb: go back and forth; swing back and forth between two states or conditions
▸ verb: be an understudy or alternate for a role
▸ verb: reverse (a direction, attitude, or course of action)
▸ 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")
▸ adjective: allowing a choice
▸ Also see alternate
▸ noun: someone who takes the place of another person
▸ verb: exchange people temporarily to fulfill certain jobs and functions
▸ verb: do something in turns
▸ verb: go back and forth; swing back and forth between two states or conditions
▸ verb: be an understudy or alternate for a role
▸ verb: reverse (a direction, attitude, or course of action)
▸ 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")
▸ adjective: allowing a choice
▸ Also see alternate