~ 1
■ verb
1》 (of a plant) become limp through loss of water, heat, or disease; droop.
↘(of a person) lose one's energy or vigour.
2》 leave (mown grass or a forage crop) in the open to dry partially before being collected for silage.
■ noun any of a number of fungal or bacterial diseases of plants characterized by ~ing of the foliage.
Origin
C17 (orig. dialect): perh. an alt. of dialect welk 'lose freshness', of Low Ger. origin.
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~ 2
archaic second person singular of will 1 .