pellet (n.) Look up pellet at Dictionary.com
mid-14c., from Old French pelote "small ball" (11c.), from Vulgar Latin *pilotta, diminutive of Latin pila "ball, playing ball, the game of ball," perhaps originally "ball of hair," from pilus "hair" (see pile (n.3)).
pellet (v.) Look up pellet at Dictionary.com
"to form into pellets," 1590s, from pellet (n.).