middle

equally distant from the extremes

an area that is approximately central within some larger region

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

being neither at the beginning nor at the end in a series

“the middle point on a line”

an intermediate part or section

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

between an earlier and a later period of time

“in the middle years”

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

put in the middle

time between the beginning and the end of a temporal period

“the middle of the war”