a lonely person.

that which is not complete.

a single act of a stage play.

not requiring any assistance in fighting; fighting single-handedly.

a person being alone.

the fact of being alone (in fighting with enemies).

a body-guard.

the planet Mars.

the planet Mercury.

Viṣṇu.

the tree Santalum album ( = Serium myrtifolium of Santalaceae family; sandalwood tree.

the timber of that tree; sandalwood.