[back to the salt mines] {informal} Back to the job; back […]

[back to the wall] or [back against the wall] {adv. phr.} […]

[back up] {v.} 1. To move backwards. * /The train was […]

[back-to-back] {adv.} 1. Immediately following. * /The health clinic had back-to-back […]

[backfire] {v.} To misfire; to have a reverse effect from what […]

[backhanded compliment] {n. phr.} A remark that sounds like a compliment […]

[backseat driver] {n.}, {informal} A bossy person in a car who […]

[backward] See: [BEND OVER BACKWARD] or [LEAN OVER BACKWARD]; [FALL OVER […]

[backward and forward] or [backwards and forwards] {adv. phr.} To the […]

[bacon] See: [BRING HOME THE BACON].