a clasp consisting of a rectangular or curved rim with one or more movable tongues, fixed to one end of a belt or strap, used for fastening to the other end of the same strap or to another strap.

any similar contrivance used for such purposes.

an ornament of metal, beads, etc., of similar appearance.

a bend, bulge, or kink, as in a board or saw blade.

to fasten with a buckle or buckles

Buckle your seat belt.

to shrivel, by applying heat or pressure; bend; curl.

to prepare (oneself) for action; apply (oneself) vigorously to something.

to bend, warp, or cause to give way suddenly, as with heat or pressure.

to close or fasten with a buckle

Grandmother always wore shoes that buckled.

to prepare oneself or apply oneself

The student buckled to the lesson.

to bend, warp, bulge, or collapse

The bridge buckled in the storm.

to yield, surrender, or give way to another (often fol. by under )

She refused to take the medicine, but buckled under when the doctor told her to.

buckle down, to set to work with vigor; concentrate on one's work

He was by nature a daydreamer and found it hard to buckle down.

buckle up, to fasten one's belt, seat belt, or buckles

She won't start the car until we've all buckled up.

verb

be lazy , ignore , relax

verb

address , apply oneself , attend to , bend , concentrate on , dedicate oneself to , devote oneself to , exert oneself , get serious , give , give oneself over to , keep close to , keep one’s mind on , knuckle down , launch into , occupy oneself with , pitch in , plunge into , put one\'s hand to the plow , put one\'s nose to the grindstone , set to , swing into action , take the bull by the horns , throw , turn , buckle