1430, "plug, bung," from M.Fr. tampon
, nasalized variant of O.Fr. tapon
"piece of cloth to stop a hole" (1382), a suffixed form of Frank. *tappo
"stopper, plug," related to O.H.G. zapfo
and O.E. tæppa
"stopper" (see tap
(2)). Meaning "wooden plug for the muzzle of a gun" (to keep out rain or seawater) is recorded from c.1625.