back end

noun

Northern English dialect autumn

adjective back-end

(of money, costs, etc) required or incurred after a project has been completed

Word Origin for back end

from the phrase the back end of the year
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Examples from the Web for back end