What is to let the tide or other water in upon (lowlying land), for the purpose of fertilization, by a deposit of warp, or slimy substance. [Prov. Eng.] called?

warp — (Agric.) To let the tide or other water in upon (lowlying land), for the purpose of fertilization, by a deposit of warp, or slimy substance. [Prov. Eng.]. (Webster's 1913.)

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