(n) wingback
(n) autobacks
(n) gadget bag
(n) (1) large bag with handles
carry bag
(2) small case with wheels
(3) bringing the ball back to one's own position (rugby) (wasei: carry back)
(n) (comp) crankback
(n) greenback
(n,vs) switchback
(n) Starbucks
(n) turnbuckle
(n) (abbr) film credits (wasei: title background)
(n) track back
(n) back attack
(n) back order
(n) (comp) back office
(n) backgammon
(n) (comp) backquote (character)
(n) (comp) background
(n) backswing
(n,vs) backstab
(n) backstage
(n) backspace (char)
(n) back charge
(n,vs) backtrack
(n) (1) back-drop
(2) suplex (pro-wrestling)
(n) back issue (of a publication)
back-number
(n) (comp) back buffer
(n) backpacker
(n) backfire
(n) (comp) backplane
(n) back margin
