flea has definitions from the fields of biology,zoology
1
[ noun ] (biology,zoology) any wingless blood-sucking parasitic insect noted for ability to leap

Used in print

(Octavia Waldo, A Cup of the Sun....)

The women said they had seen him wave an exhausted farewell ; but he might have been shooing_away the fleas that hopped from his yellow dog onto him .

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