buckle in Greek

A metal clasp with a hinged tongue or a spike through which a belt or strap is passed and penetrated by the tongue or spike, in order to fasten the ends of the belt together or to secure the strap to something else.

To fasten (something) using a buckle (noun sense 1); hence (obsolete) , to fasten (something) in any way.

Of a thing (especially a slender structure under compression): to collapse or distort under physical pressure.