CHANCEL

The Chancel is that part of a church which contains the choir and is often at the eastern end. The name derives from the Latin word for “lattice,” describing the screen that during some eras of church history divided the chancel from the nave and crossing. The word today is often interchangeable with choir or sanctuary.

THE CHURCH OF ST. ANDREWS, CLEWER 
Picture taken from : http://www.standrewsclewer.org.uk/?page_id=86

Acknowledgement: http://www.britannica.com/EBchecked/topic/105298/chancel