1. Plural of charley; a leg cramp or muscle spasm, especially in the leg.
Usage: informal; often used in the phrase 'charley horse'
2. Plural of charley; a night watchman or security guard.
Usage: dated; chiefly British

Examples

• After the long run, she got charleys in both her legs.
• He woke up in the middle of the night with a charley in his calf.
• The charleys made their rounds through the building all night.
• Swimming can sometimes cause charleys if you're not properly warmed up.
• He stretched to relieve the charleys that had seized his thigh.