Meaning of MIDDLE in English
1》 at an equal distance from the extremities of something; central.
↘(of a member of a group or series) placed so as to have the same number of members on each side: he was in his ~ forties.
↘intermediate in rank, quality, or ability.
2》 Grammar denoting a voice of verbs in some languages, such as Greek, which expresses reciprocal or reflexive action.
1》 a ~ point or position.
2》 informal a person's waist and stomach.
3》 Grammar a ~ form or voice of a verb.
■ verb (in cricket, tennis, etc.) strike (the ball) with the ~ of the bat, racket, or club.
in the ~ of in the process of.
OE middel , of W. Gmc origin; related to mid 1 .
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004