blight

En español: mildiu, tizón, polvillo, mal

1. A diseased condition suffered by a plant; specifically, a complete and rapid chlorosis, browning, then death of plant tissues such as floral organs, leaves, branches, or twigs, especially one caused by a fungus; a mildew, a rust, a smut. (countable, uncountable)
2. The cause of such a condition, often unseen but believed to be airborne; specifically, a bacterium, a virus, or (especially) a fungus; also, an aphid which attacks fruit trees. (countable, uncountable)
3. A state of cloudy, humid weather. (countable, uncountable)
4. A diseased condition of the face or skin; specifically, bleeding under the conjunctiva of the eye, a form of skin rash, or a palsy of the face due to cold. (countable, dated, uncountable)
5. Something that impedes development or growth, or spoils any other aspect of life. (countable, figuratively, uncountable)
6. A rundown and unsightly condition of an urban area; also, such an area. (countable, figuratively, uncountable)

Plural blights