v.tr. 1 pack (a blast-hole) full of clay etc. to get the full force of an explosion. 2 ram down (road material etc.). tamper n. tamping n. (in sense 1).
[ perh. back-form. f. F tampin (var. of TAMPION, taken as = tamping ]
TAMP
Meaning of TAMP in English
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012