gap · ​. a space where something is missing. Extra funding is needed to plug the gap. · ​. a space between two things or in the middle of something, especially ... The Gap · Gap year · Gender gap · The generation gap

1a space between two things or in the middle of something, especially because there is a part missing a gap in a hedge She had a gap between her two front teeth ...

There are 17 meanings listed in OED's entry for the noun gap, six of which are labelled obsolete. See 'Meaning & use' for definitions, usage, and quotation ...

any of a group of fashionable US clothes shops. The first was opened in San Francisco in 1969 and sold only jeans.

a year that a young person spends working and/or travelling, often between leaving school and starting university

​a difference that separates men and women, in terms of attitudes, opportunities and status. A gender gap has opened in academic achievement in recent years ...

noun [singular] the difference in attitude or behavior between younger and older people that causes a lack of understanding

the difference in attitude or behaviour between young and older people that causes a lack of understanding

The earliest known use of the noun gap-bed is in the 1880s. OED's earliest evidence for gap-bed is from 1888, in Lockwood's Dictionary Mechanical Engineering.

​the difference between the amount that two different groups of people are paid. efforts to close the gender wage gap. Topics Working lifec1.