lone

adj

1. (not-comparable)Solitary; having no companion.

   “a lone traveler or watcher”

   “When I have on those pathless wilds appeared, / And the lone wanderer with my presence cheered.”

   “The Bat—they called him the Bat.[…]. He'd never been in stir, the bulls had never mugged him, he didn't run with a mob, he played a lone hand, and fenced his stuff so that even the fence couldn't swear he knew his face.”

   “The director of a school in Thailand's central province of Sing Buri is in police custody under suspicion of being the lone perpetrator of a gold shop robbery at a mall in Lop Buri province on January 9th, during which three people, including a two-year old^([sic]) boy, were murdered and four others [were] wounded.”

2. (not-comparable)Isolated or lonely; lacking companionship.
3. (not-comparable)Sole; being the only one of a type.

   “the lone male audience member at the concert”

4. (not-comparable)Situated by itself or by oneself, with no neighbours.

   “a lone house;  a lone isle”

   “By a lone wall a lonelier column rears.”

5. (archaic, not-comparable)Unfrequented by human beings; solitary.

   “Thus vanish sceptres, coronets, and balls, / And leave you on lone woods, or empty walls.”

   “He made a turn or two in the shop, and looked for Hope among the instruments; but they obstinately worked out reckonings for the missing ship, in spite of any opposition he could offer, that ended at the bottom of the lone sea.”

6. (archaic, not-comparable)Single; unmarried, or in widowhood.

   “Queen Elizabeth being a lone woman.”

   “A hundred mark is a long one for a poor lone woman to bear.”

7. (Philippines, not-comparable)Not divided into multiple districts.

   “lone congressional district”