n. The state of being sexually or romantically attracted to members of either sex.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. showing characteristics of both sexes
n. sexual activity with both men and women
Word Usage
"For many individuals, homosexual relations were only one aspect of what we call bisexuality, and the activity (anal relations) involved mainly adult men (active) and adolescent boys (passive)."