noun

• Release or detachment from a physical situation or other involvement.
• The release or separation of a chemical.
• (dated) Leisure; relief from responsibilities or onerous activities.
• (military, politics) Withdrawal from combat, confrontation, or the assertion of influence.
• Termination of an agreement to be married.
• (fencing) A circular movement of the blade that blocks an opponent's parry.
• (medicine, obstetrics) The emergence of the fetus from the birth canal.