—adv. archaic or literary 1 inside; to, at, or on the inside; internally.
2 indoors (is anyone within?).
3 in spirit (make me pure within).
4 inside the city walls (Bishopsgate within).
—prep.
1 inside; enclosed or contained by.
2 a not beyond or exceeding (within one's means). b not transgressing (within the law; within reason).
3 not further off than (within three miles of a station; within shouting distance; within ten days).
Phrases and idioms:
within doors in or into a house. within one's grasp see GRASP. within reach (or sight) of near enough to be reached or seen.
Etymology: OE withinnan on the inside (as WITH, innan (adv. & prep.) within, formed as IN)
Useful english dictionary. 2012.