1. could have; used to express something that was possible or permitted in the past but did not happen
Usage: informal; contraction; nonstandard spelling of 'could have'

Examples

• I coulda gone to the party, but I was too tired.
• You coulda asked me for help instead of struggling alone.
• She coulda been a professional athlete if she'd trained harder.
• We coulda saved money if we'd planned ahead.
• He coulda called to let us know he'd be late.