Synonym of thunderbox (“device for creating a thunder sound effect”) / A quick surprise penetration attack deep into enemy territory, designed to confuse and potentially break enemy lines.

superlative form of free-running: most free-running

(of a mechanism) Moving freely and smoothly.

The total number of copies (of a book or newspaper) printed

Used other than figuratively or idiomatically: see run, exercise. / (simile, US, colloquial, politics) To run for political office with little chance of success.

plural of run-awayer

(rare) A runaway; an escapee.

(intransitive) To be nearly used up or consumed, so that little remains.

(aviation) To fly below the bases of low clouds and close to the ground in an attempt to maintain external visual reference in weather ordinarily considered too poor for visual flying.

present participle of scud run