/ ˈbaɪndɪŋ; NAmE / adjective , noun
■ adjective
binding (on / upon sb) that must be obeyed because it is accepted in law :
a binding promise / agreement / contract
■ noun
1.
[ C , U ] the cover that holds the pages of a book together
2.
[ C , U ] cloth that is fastened to the edge of sth to protect or decorate it
3.
[ C ] a device on a ski that holds the heel and toe of your boot in place and releases the boot automatically if you fall
—picture at skiing