The book's ancient pages were so brittle, he feared they would crumble before he finished.
The barrier that separated the Arabs from the conquered nations begins to crumble away.
The clay should be only slightly burnt, so as to make it crumble down readily; in fact, the fire should not be allowed to break through, but should be constantly repressed by the addition of material.
Early one morning, we are told, in the fourth month, he got up, and with his hands behind his back, dragging his staff, he moved about his door, crooning over " The great mountain must crumble, The strong beam must break, The wise man must wither away like a plant."
Towards the northern end of Malabar hill lie the Parsee Towers of Silence, where the Parsecs expose their dead till the flesh is devoured by vultures, and then cast the bones into a well where they crumble into dust.