1.Definition: an area that is approximately central within some larger region

Related Noun(s):center, centre, eye, heart

Category: Places

2.Definition: an intermediate part or section

"A whole is that which has beginning, middle, and end"

Category: General

3.Definition: the middle area of the human torso (usually in front)

Related Noun(s):midriff, midsection

Category: General

4.Definition: time between the beginning and the end of a temporal period

"The middle of the war", "Rain during the middle of April"

Category: General