(n) jam session
(n) (comp) jumper switch
(n) (comp) jumper block
(n) (comp) jumper selectable
(n) jump blues
(n) jumbo-jet
(n) June bride
(P)
(n) jogging pants
(n) Josephson effect
(n) (comp) Josephson junction
(n) Josephson device
(n) ginger ale
(n) ginger cake
(n) superwoman
(n) supertanker
(n) (abbr) supermarket chain
(P)
(n) supervision
(n) (comp) (abbr) super minicomputer
(n) (comp) switching hub
(n) (comp) switching function
(n) (comp) switching delay
(n) (comp) switching regulator
(n) (comp) switching capacity
(n) (comp) switching variable
(n) swimming club
(P)
(n) swimming trunks (wasei: swimming pants)
bathers
(n) swimming pool
(n) sweatpants
(n) skydiving
(n) multi-storey parking garage (wasei: sky parking)