1) Hand, at times 2) Mop wielder 3) Slang for an uncouth fellow 1) Mop 2) Wet mop 
• (n.) Same as Swobber, 2. • (v. t.) To swab. • (n.) One who swabs a floor or desk. • (n.) Formerly, an interior officer on board of British ships of war, whose business it was to see that the ship was kept clean.
Swab'ber noun [ Dutch zwabber ; confer Dutch zwabberen to swab, German schwabbern , Danish svabre , Swedish svab a swab, svabla to swab.] 1. One who swabs a floor or desk. Shak. 2. (Nautical) Formerly, an interior officer on b...Swab'ber transitive verb To swab. [ R.] 
Swabber is slang for an uncouth fellow.
[The Tempest] the sailor who washes the ship and keeps the decks clean.
a person who uses a swab. · swab (def. 6). · a swab; mop.