Definition of Crabs Crabs: Slang for pubic lice, parasitic
insects that can infest in the genital area of humans. Pubic
lice are usually spread through sexual contact. Rarely,
infestation can be spread through contact with an infested
person's bed linens, towels, or clothes. The key symptom of
pubic lice is itching in the genital area. Lice eggs (nits) or
crawling lice can be seen with the naked eye.Source: MedTerms™
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