Wordnet 3.0
NOUN (2)
1.
badminton played with one person on each side;
2.
tennis played with one person on each side;
The Collaborative International Dictionary of English v.0.48:
singles \sin"gles\, n. pl.
See Single, n., 2.
[1913 Webster]
The Collaborative International Dictionary of English v.0.48:
singles \sin"gles\, a.
For unmarried persons, or catering especially to unmarried
persons; as, a singles bar; a singles party.
[PJC]
WordNet (r) 3.0 (2006):
singles
n 1: badminton played with one person on each side
2: tennis played with one person on each side