This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A method of asphalt shingle application, whereby shingle courses are applied vertically, up the roof rather than laterally across and up.

n. spun yarn used in racking ropes

v. Present participle of rack.

n. Spun yarn used in racking ropes.

n. The act of torturing on the rack.

n. Nautical, a piece of small stuff used to rack a tackle.

n. In metallurgical operations, same as ragging, 2.

n. In the manège, same as rack.

n. In masonry, the act of leaving-unfinished masonry, as prepared to receive future additions, in steps. Compare toothing.

n. In mech.: The act of operating or moving a slide-rest, or other feeding device, by a rack-and-pinion motion.

n. The act of running the hoisting-crab or trolley of a crane in or out, backward or forward, to place it in proper position.

adj. causing great physical or mental suffering

"LSU used seven running backs in racking up 184 yards rushing, led by Broussard's 67 yards on five carries."

painful   

wearing    method    straight    up   

rack   

attacking    backing    cracking    hacking    jacking    lacking    packing    sacking    smacking    snacking