- bacilysin
- bacitracin
- back
- back benches
- back bend
- back blocks
- back board
- back cap
- back channel
- back end
- back matter
- back number
- back plane
- back resistance
- back rest
- back room
- back seat
- back slang
- back slum
- back stairs
- back talk
- back vowel
- back yard
- back-alley
- back-bencher
- back-breaking
- back-burner
- back-cap
- back-field
- back-of-the-book
- back-page
- back-seat driver
- back-seat driving
- back-street
- backache
- backbite
- backbiter
- backbone
- backboned
- backchat
- backcloth
- backcountry
- backcross
- backdate
- backdown
- backdrop
- backed
- backer
- backer-up
- backfill
臉書專頁