I didn't eat the cookie," replied Tom with crumbs on his lips.

Sami's marriage really began to crumble.

The old masonry was beginning to crumble.

The volcano crumbled into the sea.

I don't want crumbs on the table.

Clear off all those crumbs from the table right now.

The old brickwork was beginning to crumble.

Everything crumbles as soon as I touch it.

Yanni's world was crumbling.

There were only crumbs left in the box.