Head ::
Head (n.) The
source, fountain, spring, or
beginning, as of a
stream or
river; as, the head of the Nile;
hence, the
altitude of the
source, or the
height of the
surface, as of
water, above a given
place, as above an
orifice at which it
issues, and the
pressure resulting from the
height or from
motion; sometimes also, the
quantity in
reserve; as, a mill or
reservoir has a good head of
water, or ten feet head; also, that part of a gulf or bay most
remote from the
outlet or the sea..