Anything very small; a minute object; a very little quantity or particle. Sometimes used adverbially.
Esimerkit
One mite wrung from the lab'rer's hands
Shall buy and sell the miser's lands;
“Well,” I says, “I cal'late a body could get used to Tophet if he stayed there long enough.” ¶ She flared up; the least mite of a slam at Doctor Wool was enough to set her going.
"Those trousers are a mite too big, but you'll soon grow into them."