Properly, the surface of the body, the skin; but, in medical language, of the body.
Handkerchiefs (σουδάρια)
See on Luk 19:20.
Aprons (σιμικίνθια)
Only here in New Testament. A Latin word, semicinctia. Lit., something passing half-way round the body: an apron or waistband. Perhaps garments worn by Paul when engaged at his trade.