buckle under

Did you buckle under the pressure to perform at the highest level?

They would buckle under the heel of a new, soon-to-be democratic government.

Trust im for makin is wife buckle under; es not a man to stand nonsense from anybody.

She went into her room, opened the cabinet, and hid the buckle under a pile of linen.

For greater lengths or loads the strut tends to bend or buckle under the load.

He knew that if he rose his knees would buckle under him; that if he drew out his revolver it would slip from his palsied fingers.