sou'wester (plural sou'westers)
- alternative form of southwester (the wind; this is the usual spelling for the hat)
1913, Joseph C. Lincoln, chapter 1, in Mr. Pratt's Patients:
For a spell we done pretty well. Then there came a reg'lar terror of a sou'wester same as you don't get one summer in a thousand, and blowed the shanty flat and ripped about half of the weir poles out of the sand.
- a waterproof hat with a long brim at the back, covering the neck.
- 1938, Xavier Herbert, Capricornia, New York: D. Appleton-Century, 1943, Chapter X, p. 165, 
- Joe Crowe was perched in the driving-seat, clad in oil-skins and sou'-wester, crouched in the rain, clutching two iron buckets.