From WordNet (r) 3.0 (2006):
middle
adj 1: being neither at the beginning nor at the end in a
series; "adolescence is an awkward in-between age"; "in a
mediate position"; "the middle point on a line" [syn:
in-between, mediate, middle]
2: equally distant from the extremes [syn: center(a),
halfway, middle(a), midway]
3: of a stage in the development of a language or literature
between earlier and later stages; "Middle English is the
English language from about 1100 to 1500"; "Middle Gaelic"
[ant: early, late]
4: between an earlier and a later period of time; "in the middle
years"; "in his middle thirties" [ant: early, late]
n 1: an area that is approximately central within some larger
region; "it is in the center of town"; "they ran forward
into the heart of the struggle"; "they were in the eye of
the storm" [syn: center, centre, middle, heart,
eye]
2: an intermediate part or section; "A whole is that which has
beginning, middle, and end"- Aristotle [ant: beginning,
end]
3: the middle area of the human torso (usually in front); "young
American women believe that a bare midriff is fashionable"
[syn: middle, midriff, midsection]
4: time between the beginning and the end of a temporal period;
"the middle of the war"; "rain during the middle of April"
[ant: beginning, commencement, end, ending, first,
get-go, kickoff, offset, outset, showtime, start,
starting time]
v 1: put in the middle