—interrog.adv.
1 in or to what place or position? (where is the milk?; where are you going?).
2 in what direction or respect? (where does the argument lead?; where does it concern us?).
3 in what book etc.?; from whom? (where did you read that?; where did you hear that?).
4 in what situation or condition? (where does that leave us?).
—rel.adv. (prec. by place etc.) in or to which (places where they meet).
—conj.
1 in or to the or any place, direction, or respect in which (go where you like; that is where you are wrong; delete where applicable).
2 and there (reached Crewe, where the car broke down).
—pron. what place? (where do you come from?; where are you going to?).
—n. place; scene of something (see WHEN n.).
Etymology: OE hwaeligr, hwar
Useful english dictionary. 2012.