oilskin
US /ˈɔɪl.skɪn/
UK /ˈɔɪl.skɪn/
1.
cotton fabric treated with oil to make it waterproof, used for protective clothing and coverings
:
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The fisherman wore a heavy oilskin coat to protect him from the spray.
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We covered the outdoor furniture with oilskin to keep it dry.