SAPPER Meaning of SAPPER in English sap ‧ per /ˈsæpə $ -ər/ BrE AmE noun [countable] British English [ Date: 1600-1700 ; Origin: ⇨ ↑ sap 1 ] a soldier whose job involves digging and building Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012