Definition
A 'louse' (plural: lice) is a small, wingless, parasitic insect that lives on warm-blooded animals, including humans. They feed on blood and can cause itching and irritation. Lice are highly specialized to cling to hair or feathers. Imagine them as tiny, unwelcome houseguests. They are often transmitted through close contact. While generally harmless, they can be a nuisance and sometimes transmit diseases.