Note: On such, a stool, in the temple of Apollo at Delphi,
the Pythian priestess sat while giving responses to
those consulting the Delphic oracle.
2. A three-legged frame or stand, usually jointed at top, for
supporting a theodolite, compass, telescope, camera, or
other instrument.
{Tripod of life}, or {Vital tripod} (Physiol.), the three
organs, the heart, lungs, and brain; -- so called because
their united action is necessary to the maintenance of
life.