What is Cement ?
Cement is (noun) 1. powder made from lime and clay, which is mixed with water and dries hard He was mixing cement to make a path round the house. 2. a strong glue She used china cement to stick the handle back on the cup.(verb) to attach strongly He cemented some stones on the top of the wall. The two halves should be cemented together.
source: Easier English, Student Dictionary Upper Intermediate Level