System of organs within multicellular animals which takes in food, digests it to extract energy and nutrients, and expels the remaining waste.

A system designed to give assistance to aircraft, to prevent collisions and to manage aircraft flow.

(surgery) A surgical procedure in which an incision is made into the trachea, through the neck, and a tube inserted so as to make an artificial opening in order to assist breathing.

A drama or similar work, in which the main character is brought to ruin or otherwise suffers the extreme consequences of some tragic flaw or weakness of character.

In a traditional manner. / From the beginning.

(finance) Trading activity conducted by a securities firm for its own profit rather than for its clients.

A part of culture that is passed from person to person or generation to generation, possibly differing in detail from family to family, such as the way to celebrate holidays. / A commonly held system.

(obsolete) To transmit by way of tradition; to hand down.

(UK, colloquial) An SUV or 4x4 vehicle.

A name used to identify a commercial product or service; may or may not be registered as a trademark. / The name under which a business or firm operates.