(n) skipper
(P)
(n) stepper (device used in the manufacture of integrated circuits)
(n) stopper
(P)
(n) sniper
(n) spur gear
(n) spur gear
(n) (comp) sparkle
(n) spatula
(n) chopper
(n) topaz
(n) tramper
(n) trooper
(P)
(n) napalm bomb
(n) hypernucleus
(n) parking
(P)
(n) persimmon (esp. American persimmon, Diospyros virginiana)
(n) partial
(n) parsing
(n) par save (in golf, number of shots above par for that hole)
(n) percent
percentage
(P)
(adj-na,n) personal
(P)
(n) party
(P)
(n) partner
(P)
(n) par play
(P)
(n) permalloy
(n) (1) pearlite
(2) perlite
(n) purl stitch
(n) flapper
(n) (1) (seal, walrus) flipper
(2) swimfin, (diving) fin, (diving) flipper
(3) (pinball) flipper
(n) hopper car