forˈtieth adjective

1. The last of forty
2. Next after the thirty-ninth
3. Equal to one of forty equal parts

1. One of forty equal parts
2. A person or thing in fortieth position

forˈtyish adjective

Apparently about forty years old

forˈty-fiveˈ noun

1. A gramophone record played at a speed of 45 revolutions per minute
2. (with cap and the) the Jacobite rebellion of 1745

forˈty-ninˈer noun

A prospector in the 1849 gold rush in California

forty-ninth parallel noun

The parallel of latitude 49ºN, along which lies part of the border between the USA and Canada

forty winks plural noun (informal)

A short nap, esp after dinner

roaring forties

The tract of stormy west winds south of 40ºS latitude (occasionally also in the Atlantic north of 40ºN)