early 14c., from sap (n.1) + diminutive suffix -ling. This probably is the source of American English slang sap (n.3) "club, short staff" (1899) and the verb sap (v.2) "to hit (someone) with a sap" (1926).
santeria
sap
sapid
sapience
sapient
sapling
saponification
saponify
sapper
Sapphic
sapphire