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to graze (e.g. bullet); to scratch; to touch lightly
to take a percentage; to exploit; to squeeze
石が頬を掠って飛んでいったので驚く。
I was startled when a stone grazed my cheek and flew past.
自転車が体をかするように通り過ぎた。
A bicycle passed by, nearly grazing my body.
風に乗った枝が腕を掠って傷がついた。
A branch carried by the wind scratched my arm.