What is Retreat ?
Retreat is (noun) 1. the act of pulling back an army from a battle The army’s retreat was swift and unexpected. in retreat going back from a battle in full retreat going back fast The army is in full retreat. to beat a retreat to go backwards (informal.) He went into the ladies’ toilet by mistake and had to beat a hasty retreat. 2. a quiet place They spent the weekend at their retreat in the Scottish hills. 3. a time spent in rest and religious thought in a monastery He went on a retreat. (verb) 1. to pull back from a battle Napoleon retreated from Moscow in 1812. 2. to go to a quiet place Monks retreat from the outside world. Our dog retreats to his basket if we shout at him.
source: Easier English, Student Dictionary Upper Intermediate Level