(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)

(informal) To be aware of a situation, especially of the consequences of misconduct.

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

A knot derived from the reef knot, commonly used by surgeons.

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

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

A slip knot.

(idiomatic) To beat or strike someone. / (idiomatic) To thoroughly and decisively defeat someone in a physical fight, especially by knocking out that person.

(logic) Describing situations in which the veracity of a statement may be shown to be true without revealing any other information.

(cryptography) An interactive method for one party to prove to another that a (usually mathematical) statement is true, without revealing anything other than the veracity of the statement.