invert

Short definition from Wiktionary

Verb

1. 1
   To turn (something) upside down or inside out; to place in a contrary order or direction.
2. 2
   To move (the root note of a chord) up or down an octave, resulting in a change in pitch.
3. 3
   To undergo inversion, as sugar.
4. 4
   To divert; to convert to a wrong use.
5. 5
   To turn (the foot) inwards.

Noun

1. 1
   An inverted arch (as in a sewer).
2. 2
   The base of a tunnel on which the road or railway may be laid and used when construction is through unstable ground. It may be flat or form a continuous curve with the tunnel arch.
3. 3
   The lowest point inside a pipe at a certain point.
4. 4
   An elevation of a pipe at a certain point along the pipe.
5. 5
   A skateboarding trick where the skater grabs the board and plants a hand on the coping so as to balance upside-down on the lip of a ramp.
6. 6
   A homosexual person, in terms of the sexual inversion theory.
7. 7
   Of a person, assumed to be transgender, in terms of transvestigation.
8. 8
   An invertebrate.

Adjective

1. 1
   Subjected to the process of inversion; inverted; converted.