noun
( -s )
Etymology: from gerund of vest (I)
1. : the conveying to an employee of inalienable rights to share in a pension fund and especially to recover his own and his employer's contribution on his behalf in the event of termination of employment prior to the normal retirement age ; also : the right so conveyed
2. : the taking over of private property by a government usually in return for compensation
vesting of foreign security holdings in time of war