|Easton's Bible Dictionary|
Only once in Authorized Version (Acts 19:12). The Greek word (sudarion) so rendered means properly "a sweat-cloth." It is rendered "napkin" in John 11:44; 20:7; Luke 19:20.
Noah Webster's Dictionary
1. (n.) A piece of cloth, usually square and often fine and elegant, carried for wiping the face or hands.
2. (n.) A piece of cloth shaped like a handkerchief to be worn about the neck; a neckerchief; a neckcloth.
Int. Standard Bible Encyclopedia
han'-ker-chif (soudarion): A loan-word from the Latin sudarium, found in plural in Acts 19:12, soudaria; compare sudor, "perspiration"; literally, "a cloth used to wipe off perspiration." Elsewhere it is rendered "napkin" (Luke 19:20 John 11:44; John 20:7), for which see DRESS; NAPKIN.
Handkerchief (3 Occurrences)
Luke 19:20 Another came, saying,'Lord, behold, your mina, which I kept laid away in a handkerchief, (WEB NAS)
John 11:44 And the dead came forth, bound feet and hands with graveclothes, and his face was bound round with a handkerchief. Jesus says to them, Loose him and let him go. (DBY)
John 20:7 and the handkerchief which was upon his head, not lying with the linen cloths, but folded up in a distinct place by itself. (DBY)