This is the 922nd most frequent Greek word.
αριστερό
"Αριστερό" means "left" in English.
Here, "αριστερό" describes the man's left arm, indicating a location on the body.
Ο άνδρας έχει πόνο στο αριστερό του χέρι.
The man has pain in his left arm.
Here, "αριστερό" directs location within spatial orientation, referring to the 'left' part of a bifurcated path.
Το σπίτι είναι στο αριστερό μέρος του δρομου.
The house is on the left side of the road.
In this sentence, "αριστερό" relates to hand dominance, describing the hand used more predominantly by the girl.