mildew: [OE] Mildew originally meant ‘honeydew’ (which is a sort of sticky substance exuded by aphids and similar insects on to leaves). It is a compound noun formed in the prehistoric Germanic period from *melith ‘honey’ (a relative of Latin mel ‘honey’, source of English mellifluous and molasses) and *daw-waz, ancestor of English dew. The metaphorical transference from ‘honey-dew’ to a less pleasant, fungal growth on plants, etc took place in the 14th century. => dew, mellifluous, molasses
mildew (n.)
mid-13c., mildeu "honeydew, nectar," from Old English meledeaw "honeydew" (sticky stuff exuded by aphids), from Proto-Germanic compound of *melith "honey" (see Melissa) + *dawwaz "dew" (see dew). Similar formation in Old Saxon milidou, Dutch meeldauw, German Meltau "mildew."
First element in many cases assimilated to forms of meal (n.2) "ground grain." As a kind of fungus it is first recorded mid-14c., so called from its being sticky and originally growing in plants. As a verb from 1550s. Related: Mildewed.
实用例句
1. He was already asleep in the bed, which smelled faintly of mildew.
他已经在略带霉味的床上睡着了。
来自柯林斯例句
2. The grain is liable to mildew when the humidity in the barn is too high.
