ichidan verb
let rest; give a break; excuse from work
Causative of 休む. Used when a person in authority (teacher, boss, parent) allows or instructs someone to rest, take time off, or be excused from an activity.
先生は病気の生徒を家に帰らせて休ませた。
The teacher sent the sick student home to rest.
今日は熱が
I have a fever today, so I'll ask to be excused from work.