1. near that place or location
2. approximately that amount, number, or time

Examples

• The store is on Main Street or thereabouts.
• We should arrive at 3 o’clock or thereabouts.
• The house costs $300,000 or thereabouts.
• Look for the restaurant near the park or thereabouts.
• The meeting will last two hours or thereabouts.
• There were fifty people or thereabouts at the event.
• The library is somewhere thereabouts.