The bite of a flea, or the red spot caused by the bite.(noun)
A trifling wound or pain, like that of the bite of a flea.(noun)
Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)
Use "flea-bite" in a sentence
"I expect he will survive my flea-bite criticisms but if these comment pages are not an opportunity to give some critical feedback, then I don't know what they are for."
"But the feathers were, comparatively, a mere flea-bite."
"In other news, Kasia has for some time been suffering from a flea-bite allergy, which has left her back and neck covered with itchy scabs."