middle

Equally distant from the extremes.

Being neither at the beginning nor at the end in a series.

“the middle point on a line”

Between an earlier and a later period of time.

“in the middle years”

“in his middle thirties”

Of a stage in the development of a language or literature between earlier and later stages.

An area that is approximately central within some larger region.

The middle area of the human torso (usually in front).

An intermediate part or section.

“A whole is that which has beginning, middle, and end”

Time between the beginning and the end of a temporal period.

“the middle of the war”

“rain during the middle of April”

Put in the middle.