To turn about, around, or upside down; put in an opposite or contrary position; turn in an opposite direction, or through 180°; invert.In machinery, to cause to revolve or act in a contrary direction; give an exactly opposite motion or action to, as the crank of an engine, or that part to which the piston-rod is attached.—In general, to alter to the opposite; change diametrically the state, relations, or bearings of.To overturn; upset; throw into confusion.To overthrow; set aside; make void; annul; repeal; revoke: as, to reverse a judgment, sentence, or decree.To turn back; drive away; banish.To cause to return; bring back; recall.Synonyms To invert.To rescind, countermand.To change position, direction, motion, or action to the opposite; specifically, in round dances, to turn or revolve in a direction contrary to that previously taken: as, to reverse in waltzing.To be overturned; fall over.To turn back; return; come back.Turned backward; opposite or contrary in position or direction; reversed: as, the reverse end of a lance; reverse curves; reverse motion.Two points are said to be reverse of each other, with reference to two fixed origins and two fixed axes, when the line through the first origin and the first point meets the first axis at the point where the line through the second origin and the second point meets the same axis, while the line through the first origin and the second point meets the second axis at the same point where the line through the second origin and the first point meets the same axis.Contrary or opposite in nature, effects, or relations: as, a reverse order or method.Overturned; overthrown.Upset; tossed about; thrown into confusion.In conchology, same as reversed, 5.n. Reversal; a change to an opposite form, state, or condition; a complete alteration.n. A complete change or turn of affairs; a vicissitude; a change of fortune, particularly for the worse; hence, adverse fortune; a misfortune; a calamity or blow; a defeat.n. In fencing, a back-handed stroke; a blow from a direction contrary to that usually taken; a thrust from left to right.n. That which is presented when anything, as a lance, gun, etc., is reversed, or turned in the direction opposite to what is considered its natural position.n. That which is directly opposite or contrary; the contrary; the opposite: generally with the.n. In numismatics, the back or inferior side of a coin or medal, as opposed to the obverse, the face or principal side.n. In heraldry, the exact contrary of what has been described just before as an escutcheon or a quartering.n. Same as reversetwist.