From Middle English sulwen, solwen, solewen, variant of Middle English sulien (“to sully”), or representing an unrecorded Old English *solgian (“to soil, sully”), related to Old High German solagōn (“to soil, sully, make dirty”). More at sully.
sullow (third-person singular simple present sullows, present participle sullowing, simple past and past participle sullowed)
From Middle English suluh, solowe, from Old English sulh, from Proto-Germanic *sulhs, from Proto-Indo-European *selk- (“to pull”) (compare Latin sulcus (“furrow”), Tocharian B sälk (“to pull out”), Ancient Greek ἕλκω (hélkō, “to drag”), ὁλκός (holkós, “draft”), Albanian hulli (“furrow”), heq (“take away, drag”) dialectal helk, Old Armenian հեղգ (hełg, “slow-going, lagging”)).
sullow (plural sullows)