Definitions

1. noun

a person who sucks the penis of a male animal, especially a rooster, or a contemptible person

“The farmer was known as a cocksucker to the other villagers due to his cruel treatment of animals.”

2. noun

a person who performs oral sex on another person, especially a male

“The news of his infidelity made him a subject of gossip among the coworkers, who referred to him as a cocksucker.”