a device that facilitates breathing in cases of respiratory failure
the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation
passing or able to pass air in and out of the lungs normally; sometimes used in combination
an instrumentality invented for a particular purpose
any clever maneuver
something in an artistic work designed to achieve a particular effect
any ornamental pattern or design (as in embroidery)
