Definition of "overlap" []

• To lie or extend over and cover part of. (verb-transitive)
• To have an area or range in common with. (verb-transitive)
• To lie over and partly cover something. (verb-intransitive)
• To correspond in character or function: Their duties overlap. (verb-intransitive)
• Mathematics To have one or more elements in common. Used of sets. (verb-intransitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "And nobody will ever notice that bit in the back where the overlap is a little rough."
• "Although I was already a fan of both authors, it was this curious title overlap that led me to snatch these two off the New Releases table at my local bookstore."
• "The Republican Party had this lawsuit in place when they were fighting the-what we call the overlap voting, which is when absentee voting started, before the close of voter registration, which allowed people to go to an early voting site, register to vote, request an absentee ballot, and vote it on the spot."