Definition of "Ending" :

noun: the act of ending something

noun: the end of a word (a suffix or inflectional ending or final morpheme)

"I don't like words that have -ism as an ending."

noun: the last section of a communication

noun: event whose occurrence ends something

"His death marked the ending of an era."

noun: the point in time at which something ends

"The ending of warranty period."