1. feeding on blood; relating to an animal or insect that sucks blood from other creatures
Usage: literal, biological sense
2. exploitative or greedy; taking unfair advantage of others for profit or gain
Usage: figurative, informal

Examples

• Mosquitoes are bloodsucking insects that transmit diseases.
• The vampire bat is a bloodsucking mammal found in Central and South America.
• He accused the landlord of being a bloodsucking profiteer who charged excessive rent.
• The company was criticized for its bloodsucking business practices.
• Ticks are bloodsucking parasites that attach to animals and humans.
• The corrupt officials were described as bloodsucking leeches on society.