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.
Easton’s Bible Dictionary
Handkerchief
Easton’s Bible Dictionary (1897), public domain. Text via Theographic Bible Metadata, CC BY-SA 4.0.