CALL n.
See Assessment, 4. At call, or On call, liable to be demanded at any moment without previous notice; as money on deposit. -- Call bird, a bird taught to allure others into a snare. -- Call boy (a) A boy who calls the actors in a theater; a boy who transmits the orders of the captain of a vessel to the engineer, helms…
CRITICAL a.
of a fever; a critical situation. Our circumstances are indeed critical. Burke. The small moment, the exact point, the critical minute, on which every good work so much depends. South. Critical angle (Optics), that angle of incidence of a luminous ray at which it is wholly reflected, and no portion of it transmitted. T…