the action of fastening or holding together, or of being linked by chemical bonds

the binding of antibodies to cell surfaces

a strong covering holding the pages of a book together

if the binding is preserved, you can read it 200 years hence

a mechanical device fixed to a ski to grip a ski boot, especially either of a pair used for downhill skiing which hold the toe and heel of the boot and release it automatically in a fall

(in Chomskyan linguistics) the relationship between a referentially dependent noun (such as a reflexive) and the independent noun phrase which determines its reference