fall-out

n [U] radioactive waste carried in the air after a nuclear explosion （核爆炸後大气中的）放射尘.

fall in love with, fall in love with sb., fall in with, fall into, fall into step, fall into sth, fall off, fall on one's knees, fall on/upon sb/sth, fall out, fall out of, fall over, fall over sb/sth, fall through, fall to, fall to (doing sth), fall to bits, fall to doing, fall under, fall under sth, fallacious, fallaciously, fallacy, fallen, fallibility, fallible, falling, falling star, Fallopian tube, fallow, fallow deer, false, falsehood, falsely, falseness, falsies, falsification, falsify, falsity, falter,