rack 1 (rāk) n.
rack out Slang To go to sleep or get some sleep. rack up Informal To accumulate or score: rack up points. Idiom(s): on the rackUnder great stress. [Middle English rakke, probably from Middle Dutch rec, framework; see reg- in Indo-European roots.] rack'er n. |
on the rack
Under great stress, as in I was on the rack while I waited for the test results. This expression, alluding to a medieval instrument of torture to which the victim was fastened and stretched, has been used figuratively since the late 1500s. Shakespeare had it in The Merchant of Venice (3:2): "Let me choose, for as I am I live upon the rack."