sb. Obs. rare1. [perh. vbl. sb. from *blichen, a southern form of blikne, BLIKEN, to become pale. Cf. BLIGHT.]
Mildew, rust or blight in corn.
c. 1420. Pallad. on Husb., I. 827. For blichenyng [rubigine] aud myst take chaf and rar, And ley it on thi lande.