To flow back or return.
To boil a liquid in a vessel having a reflux condenser
A technique, using a reflux condenser, allowing one to boil the contents of a vessel over an extended period.
The backwards flow of any fluid.
The leaking of stomach acid up into the oesophagus.
To pull (something) back or back inside.
To avert (one's eyes or a gaze).
To decline or fail to do something promised; to break one's word.
Of something said or written (such as published academic work): to take back or withdraw.
To draw (an extended body part) back into the body.
To take back or withdraw (something that has been said or written); to disavow, to repudiate.
Originally in chess and now in other games as well: to take back or undo (a move); specifically (card games) to take back or withdraw (a card which has been played).
To break or fail to keep (a promise, etc.); to renege.
To draw back; to draw up; to withdraw.
To pronounce (a sound, especially a vowel) farther to the back of the vocal tract.
To cancel or take back (something, such as an edict or a favour or grant previously bestowed); to rescind, to revoke.