Stopcock ::
Stop (n.) Some part of the
articulating organs, as the lips, or the
tongue and
palate, closed (a) so as to cut off the
passage of
breath or voice
through the mouth and the nose
(distinguished as a
lip-stop, or a
front-stop, etc., as in p, t, d,
etc.), or (b) so as to
obstruct, but not
entirely cut off, the
passage, as in l, n, etc.; also, any of the
consonants so
formed..