gap 
/ˈgæp/ noun
plural gaps /ˈgæp/ noun [count] 1 a : a space between two people or things
▪ The child had a gap between her two front teeth. ▪ The gap between the lead runner and the rest of the field continued to widen.
b : a hole or space where something is missing
▪ The sheep got through a gap in the fence. 2 : a missing part
▪ There are unexplained gaps in his story. ▪ The class filled in the gaps in my knowledge of biology. 3 : a part or period in which nothing happens
▪ She had taken several years off to raise a family, so there was a large gap in her work history. 4 : a difference between two people, groups, or things — often + between ▪ There is a widening gap between the rich and the poor. ▪ We hope to close the gap between well-funded suburban schools and the struggling schools in poorer communities. ▪ His work bridges the gap between popular fiction and serious literature. [=his work has qualities of both popular fiction and serious literature] — see also credibility gap, generation gap
▪ The child had a gap between her two front teeth. ▪ The gap between the lead runner and the rest of the field continued to widen.
b : a hole or space where something is missing
▪ The sheep got through a gap in the fence.
▪ There are unexplained gaps in his story. ▪ The class filled in the gaps in my knowledge of biology.
▪ She had taken several years off to raise a family, so there was a large gap in her work history.
