unipodn.

1874 H. F. Woods Hist. Sketches Brookline, Mass xii. 229 Another of his unique inventions was the ‘unipod’, perhaps suggested by the Latin tripod,—a stool with only one leg and that in the middle.

1882 Brit. Jrnl. Photogr. Almanac 127 A Novel Unipod Camera Stand. Mr. Conan Doyle..describes a novel stand used by him. It is simply a single pole with a spike of iron three or four inches long at one end, and a ball-and-socket arrangement for attachment to the camera.

1935 Camera Feb. 361/2 The Unipod. Pocket models, which extend to 4ft. 3 ins. and 5 feet... This real aid to steadiness should meet with a universal sale.

1955 L. A. Kent Brookline Trunk viii. 160 At other times they were merely made to sit on the unipod, as Master Adams called a stool he had invented. It had one leg in the middle and to stay right side up on it for any length of time took almost as good a sense of balance as is needed for riding a bicycle.

1979 Mod. Photogr. (N.Y.) Oct. 60/1 (advt.) Now that you've steadied your camera on a conventional unipod, what are you going to do about your arms?

2008 Pop. Photogr. Sept. 94/1 (advt.) The world's first and only unipod with a unique foot stabilizer.