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head louse

head louse

5.6
A small insect that lives in human hair and feeds on blood
  • noun
  • /hɛd laʊs/
translation icon : piojo de cabeza
  • Many parents are concerned when they discover that their child has a head louse after a sleepover.

Examples

  • To find out if your child has a head louse, do a test!

    Blog text (5)
  • If your child is scratching their head frequently, it might be a sign that they have a head louse infestation.

  • The head louse feeds on tiny amounts of blood from the scalp, causing itching and discomfort.

Synonyms

head lice
vshead louse
6 2.5

Small insects that live in hair and make the head itchy

is the singular common term for the same parasite species
Pediculus capitis
vshead louse
  • Specialized
6.4

A tiny insect that lives on the top of the head and causes strong itching

is the common name rather than the formal species label
Pediculus humanus
vshead louse
  • Specialized
9.8

A small insect that lives on people's hair or clothing and feeds on blood

is narrower and applies only to parasites limited to the scalp

Surface Forms

louse singular
lice plural

Morphology

head + louse

The meaning 'a louse that lives on the head' is directly and transparently derived from combining 'head' (the body part) with 'louse' (a tiny parasitic insect); a B1 learner who knows both words will readily infer this interpretation. This kind of noun + noun compound indicating location or type is cross-linguistically common, reinforcing its immediate comprehensibility.

Etymology

Head louse is a very literal name: it's a louse, a tiny insect that lives on the head and clings to hair. They feed on small amounts of blood and lay eggs called nits, so 'head louse' simply means 'a small insect that lives on the head'.