PTSot 20.d:58[2] :שזרן כיתן‏ : they twist linen (thread)
See the entire entry for kettān, kettānā n.f./m. linen; flax

PTSot 20.d:58[2] :מצרן עמר‏ : they twist wool †
See the entire entry for mṣr vb. to twist

PTSot 20.d:58[2] :שזרן כיתן‏ : flax twisters(f.)
See the entire entry for šzr vb. to twist