dibble (n.)

"tool to make a hole in the soil (as to plant seeds)," mid-15c., probably from Middle English dibben "to dip" (c. 1300, perhaps akin to or an alteration of dip (v.)) + instrumental suffix -el (1). The verb, "make a hole with or as with a dibble," is from 1580s. Related: Dibbled; dibbling.