A wire strung high above the ground which is used for acrobatic stunts.

Pertaining to a wire strung high above the ground which is used for acrobatic stunts. / (by extension) Very risky and daring.

A positive feeling resulting from helping others, supposed to be caused by the release of endorphins within the brain.

A large town in Buckinghamshire, England

A borough of Derbyshire, England.

Voltage that is higher than the standard or usual voltage, especially when considered to be dangerous.

Pertaining to such a voltage; designed to carry or operate at high voltage. / (figuratively) Extremely intense; highly-charged.

(humorous) Extremely happy with life, especially as the result of terminating an addiction.

(dated) snobbish; supercilious

plural of high steel