Cuisset

Mr. Hasted, author of the History of Kent, in causing a cellar to be made, found two bodies in armour, with a sword and dagger lying by them: the armour was a helmet, back and breast-piece with cuissets for the thighs.

Source: wiktionary

[...] appears worn horizontally about the loins; the thighs are covered in front by cuissets reaching to the knees [...]

Source: wiktionary

Then they brought out the armor. They attached the sollerets to the shoes, placed the greves and the cuissets on the legs, the genouillères on the thighs and continued on to the upper body—forearms, upper arms, and gauntlets—and ...

Source: wiktionary

... the back pouldrons, vanbraces, two gauntlets, tassets, cuissets, culets, or guard de rein, all fitting to [...]

Source: wiktionary