1.(n.)the female equivalent of a cock block ; a person who prevents a woman from scoring 2.(n.)the female equivalent of a boner killer ; a person or situation that turns a woman off3.(v.) an act which prevents a woman from scoring, intentionally or not

1. My roommate is a crazy-ass beaver dam . I can't bring anyone home without her trying to fuck them first.2. Long nails are a sure-fire beaver dam. No wolverine bullshit in my snatch, thank you.3. Dude, quit tryin' to beaver dam me! I need to get laid!