sb. Obs. rare1. [perh. vbl. sb. from *blichen, a southern form of blikne, BLIKEN, to become pale. Cf. BLIGHT.]

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  Mildew, rust or blight in corn.

2

c. 1420.  Pallad. on Husb., I. 827. For blichenyng [rubigine] aud myst take chaf and rar, And ley it on thi lande.

3