(astronomy) A spherical shock wave that arises when material spirals inward to a gravitational source such as a star or black hole.

To stun or debilitate as by a shock.

(figuratively) A stunning shock. / (uncountable) A psychiatric condition characterized by fatigue caused by battle. / A person with the condition.

A severe and rapid systemic allergic reaction to an allergen, constricting the trachea and causing generalized vasodilation.

(mechanical engineering) A mechanical device designed to smooth out or damp any sudden shock impulse and dissipate kinetic energy; usually consists of a combination of a spring and a dashpot.

(idiomatic, chiefly US) Disgust, shock, or fright upon learning the price of an item offered for sale.

(pathology) A life-threatening condition caused by infection and sepsis, often after surgery or trauma.

(slang) A deliberately offensive or provocative talk show host.

Shock caused by extreme excitability of the parasympathetic nervous system. This hyperexcitability is caused by severe pain and results in an extreme slowing of heartbeat and pulse, leading to a dangerous drop in blood pressure and hence shock.

(astronomy) The boundary marking one of the outer limits of the Sun's influence, where the solar wind dramatically slows. / (by extension, astronomy) That point for space around any star.