[tamp] vt [prob. back-formation fr. obs. tampion, tampin plug, fr. ME, fr. MF tapon, tampon, fr. (assumed) OF taper to plug, of Gmc origin; akin to OE taeppa tap] (1834) 1: to drive in or down by a succession of light or medium blows "~ wet concrete"
2: to put a check on: reduce, lessen -- tamp.er n
[2]tamp n (1920): a tool for tamping