Definition of: rubble

(rub′əl) noun
1. Rough, irregular pieces of broken stone.
2. The debris to which buildings of brick, stone, etc., have been reduced by a violent action, such as earthquake or bombing.
3. (also r′bəl) a In quarrying, the weathered or friable surface layer of rock. b Rough pieces of stone for use in construction, especially in residences.
4. Water-worn stones.
5. Rubblework. [Origin uncertain. Prob. related to RUBBISH.]