Fleas

Definition

Small, wingless insects that are external parasites of mammals and birds, feeding on their host's blood.

Etymology

From Old English 'flēah', related to Old Norse 'flō', Dutch 'vloo', and German 'Floh'.

Example

Fleas can cause significant discomfort to pets, as their bites lead to itching and skin irritation.

Synonyms

• Siphonaptera

Related Terms

• Parasites
• Bloodsuckers
• Hosts
• Ectoparasites

Usage Notes

Fleas can be vectors for various diseases and can transmit parasites like tapeworms to their hosts.