Definition of rack:

part of speech: noun

An instrument for stretching; an engine of torture; extreme pain; anguish.

part of speech: noun

A receptacle for hay for feeding horses, & c., formed of a range of upright bars; a frame on which articles may be placed or spread out, as a plate- rack; the frame from which the yarn or thread is drawn in spinning; in mining, an inclined plane on which the ore is washed and separated from the slime or earth; a flat bar with teeth on one side to work into those of a pinion.

part of speech: noun

The neck or spine of a fore quarter of veal or mutton.

part of speech: verb

To strain; to stretch; to torture by stretching; to affect with extreme pain or anguish.

part of speech: noun

The drift of the sky; thin, flying, broken clouds- not to be confounded with reek, a mist or vapour.

part of speech: verb

To decant or strain, as wines; to draw wines off the lees.