1 [I,T] wither (sth) (away) (used about plants) to become dry and die; to make a plant do this （指植物）（使）枯萎，凋谢: The plants withered in the hot sun. 植物在烈日下枯萎。

2 [I] wither (away) to become weaker then disappear 衰微；凋零: This type of industry will wither away in the years to come. 这种工业几年后就要衰微。