past participle. Worn out with travel, age, etc.

To be fatigued with lying (in bed).

To breathe hard, pant, puff. to blow out: to be winded. (Cf. sense 8.)

= flag, v.1 in various intransitive senses. To become languid or flabby. Of a garment: To fall in folds. Obsolete.

So to break one's brain, mind, wind (cf. broken-winded, adj.). Obsolete.

transitive (reflexive) and intransitive. Scottish. To make a strenuous effort; to exert oneself greatly or excessively. Obsolete.

the wall: the point of onset of extreme fatigue reached by long-distance and marathon runners, at which the body's stores of energy are virtually…