flea

Pronunciation

• IPA ^(key): /ˈfliː/ or [ˈflɪi̯]

• Audio (US)

  (file)

• Hyphenation: flea
• Homophone: flee

Noun

Singular flea

Plural fleas

False colors scanning electron micrograph of a flea.

1. (countable) A flea is a small, wingless insect that lives on animals and sometimes humans, feeding on blood. Fleas can jump very far compared with their size and often cause itching.