BT Ḥul 60a(19) :ויתיב וסתר דולאלי בשוקא דרומי‏ : he used to sit and wind threads in the marketplace of Rome
See the entire entry for dullāl, dullālā v.n.D spun thread

BT Ḥul 60a(19) :יהבין ליה מסתוריתא ויתיב וסתר דולאלי בשוקא דרומי‏ : they used to give him a reel, and he would sit and wind the threads in the marketplace of Rome
See the entire entry for str#3 vb. to wind thread