1.Definition: being or characteristic of a single thing or person
2.Definition: characteristic of or meant for a single person or thing
"Single occupancy", "A single bed"
3.Definition: existing alone or consisting of one entity or part or aspect or individual
"Upon the hill stood a single tower", "Had but a single thought which was to escape", "A single survivor", "A single serving", "A single lens", "A single thickness"
4.Definition: having uniform application
"A single legal code for all"
5.Definition: not divided among or brought to bear on more than one object or objective
"Judging a contest with a single eye", "A single devotion to duty"
6.Definition: not married or related to the unmarried state
"Sex and the single girl", "Single parenthood", "Are you married or single?"
7.Definition: used of flowers having usually only one row or whorl of petals
"Single chrysanthemums resemble daisies and may have more than one row of petals"