Being without a companion; being by one's self; also, sad from lack of companionship; lonely; as, a lone traveler or watcher.
source: Webster 1913
noun
A lane. See Loanin.
source: Webster 1913
adjective satellite
lacking companions or companionship
He was alone when we met him. She is alone much of the time. The lone skier on the mountain. A lonely fisherman stood on a tuft of gravel. A lonely soul. A solitary traveler.
source: WordNet 3.0
characterized by or preferring solitude
A lone wolf. A lonely existence. A man of a solitary disposition. A solitary walk.
source: WordNet 3.0
being the only one; single and isolated from others
The lone doctor in the entire county. A lonesome pine. An only child. The sole heir. The sole example. A solitary instance of cowardice. A solitary speck in the sky.