1. Lame, injured, or not working properly; said of a leg or limb.
Usage: British informal; often used to describe a leg that is injured or weak
2. Not functioning properly; broken or defective.
Usage: British informal; used for objects or equipment

Examples

• He walked with a limp because of his gammy knee.
• The old car had a gammy engine that needed repair.
• She twisted her ankle and now has a gammy leg.
• The printer is gammy again; it won't print properly.
• After the injury, his gammy arm made it hard to play tennis.
• The gammy wheel on the shopping cart kept squeaking.