Wiktionary
n. (context workplace English) Amount of time expressed as the number of days per year that an employee is entitled to be away from work.
Wikipedia
Annual leave is paid time off work granted by employers to employees to be used for whatever the employee wishes. Depending on the employer's policies, differing number of days may be offered, and the employee may be required to give a certain amount of advance notice, may have to coordinate with the employer to be sure that staffing is adequately covered during the employee's absence, and other requirements may have to be met. The vast majority of countries today mandate a minimum amount of paid annual leave by law, though the United States is a notable exception in mandating no minimum paid leave and treating it as a perk rather than a right.
Usage examples of "annual leave".
The previous autumn he had used his annual leave to go to Jerusalem, claiming he wished to make a pilgrimage to the holy sites.
Thereafter they lived in the house one month each year, when Sam took his annual leave, trying it and wearing it until it fitted perfectly.
In light of recent events, I doubted anybody thought it the least bit strange when I announced at staff conference the following Monday morning that I was taking annual leave.
He'd taken his annual leave, and told the office he'd be vacationing quietly on the North Island.
When Jinny took her regular annual leave from the directorship of Moonbase the commute became easier: merely from Savannah to Austin.