sloom
To sleep lightly, to doze, to nod; to be half-asleep.
The squire sloomed and slept in his chair; and finally, after a cup of tea, went to bed.
To soften or rot with damp. (of plants or soil)
He adds, that one hundred bolls, or fifty quarters of wheat may be thrashed in a day of eight hours, unless the grain has been sloomed or mildewed; […]
Where it comes from
From Middle English slumen, slummen, from Old English *slūmian (“to slumber, sleep gently”), from Proto-Germanic *slūm- (“to be slack, loose, or limp”), from Proto-Indo-European *(s)lew- (“limp, flabby”).
Adapted from the Wiktionary entry sloom (CC BY-SA 4.0).