overlap Verb To extend over and partly cover something.
overlap Verb To have an area, range, character or function in common.
overlap Verb Used of sets that have some elements in common.
overlap Noun Something that overlaps or is overlapped
overlap Noun a situation in the game where an attacking line has more players in it than the defensive line coming to meet it. The attacking side may "exploit the overlap" by using their superior numbers to break the opposition's defensive line. If attackers outnumber defenders by more than one player this is often termed a "two man overlap" or "three man overlap", etc. If the attacking side fails to break through usually due to poor execution, they are said to "waste an overlap".