Definitions
1.VerbTo try to get a ride in a passing vehicle while standing at the side of a road, generally by either sticking out one's finger or thumb or holding a sign with one's stated destination.
2.VerbTo try to get (a ride) in this manner."Pamela hitchhiked a ride to New York."
3.VerbTo be carried along with something else."In genetic hitchhiking, a gene is propagated because it occurs in conjunction with a favourable mutation.; In cultural hitchhiking, a cultural trait spreads with a technologically advanced population."
4.NounA journey made by hitchhiking.
5.NounAlternative form of hitchhiker (“advertisement at the end of a programme”).