1. a bribe or illegal payment made to secure a favor or avoid trouble
Usage: informal; chiefly British
2. a backhanded blow or stroke, especially in tennis or other sports
Usage: informal

Examples

• The official was accused of accepting a blackhander to overlook the violation.
• He returned the serve with a powerful blackhander down the line.
• The investigation revealed a pattern of blackhanders paid to local authorities.
• She executed a perfect blackhander to win the point.
• The politician denied receiving any blackhanders from the contractor.