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A blow administered by the back of one's hand. You talk about my girl like that again, and you'll get a backhander to the face, understand?
One who is apt to address people in a friendly manner, often when it is feigned or false. I don't think she actually likes me—she seems like a real glad-hander.
n. a backhand slap in the face. Yes, officer, a perfectly strange woman came up and clobbered me with a backhander that loosened a tooth.
n. someone who displays effusive friendship, typically a politician. (See comment at glad-hand.) The glad-handers were out in full force at the Independence Day parade.