A small ball of clay, baked hard and oiled, used as a marble in games.(noun)
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Use "knicker" in a sentence
"Baseball players would cut apart their socks and add material to elongate the stirrup and give the "knicker" effect."
"There is trollish nudity, sexy-schoolgirl knicker perversion and a good deal of barefoot running."
"Cutrone, the sage of the panel, talked about having a conversation with MTV suits when "Jersey Shore" broke out and the press got all knicker-knotted about them using words like "Guido.""