Flea

Definition

= very small (about 1.25 millimeters long) black, jumping insect that sucks blood in its adult phase, inflicting itching bites as they do so; its hind legs are adapted for jumping; ◄ |iPulex irritans;|i* ► parasitic on man, but with other subspecies that also live on dogs, camels, and other mammals; ≈ regarded as a nuisance, though insignificant