- consisting of, done by, or involving only one person, esp. a man: a one-man show
- forming an attachment to only one man or to only one man at a time: a one-man dog
- Consisting of, featuring, or controlled by one man: a one-man band; a one-man show at the art gallery.
- Designed for or restricted to one person: a one-man tent.
- Emotionally attached to or romantically involved with one man only.