mary saw the woman who snagged her man at last month's powwow, so she walked up to her and gave her a vicious bannock slap
a backhanded slap, usually across the face, with a long, wide arc
"mary saw the woman who snagged her man at last month's powwow, so she walked up to her and gave her a vicious bannock slap" What is the definition of "bannock slap"?