(idiomatic, US) Hopefully; a self-directive to undertake the customary action to ward off bad luck.

(slang, sometimes offensive) Pregnant, typically outside of marriage. / (slang, archaic) Exhausted; worn out or used up.

simple past tense and past participle of knock up

The medical condition genu valgum

Alternative spelling of knock knee

(of the legs) having the knees abnormally close together, and the ankles spread apart / (of a person or animal) suffering from genu valgum (or tibia valga)

The sound produced, in an internal combustion engine, by the ignition of the fuel-air mixture before the piston reaches top dead centre

(transitive, idiomatic) To astonish; to stagger or overwhelm; to confuse or disorient.

(Britain) A secondary, often unintended effect; a repercussion, chain reaction.

(transitive) To stun; to surprise. / (transitive) To drink an alcoholic beverage swiftly or often. / (transitive, UK, Australia) To reject; to refuse.