休み
やすみ · yasumi · JLPT N5 · noun
vacation
🛌 休 = person 亻 + tree 木: a person leaning on a tree, resting
休み is the noun form of the verb 休む (yasumu, to rest). Sound hook: yasumi starts like yasui (easy), so a yasumi is your easy day. Same root appears in 夏休み (natsuyasumi, summer holiday) and 昼休み (hiruyasumi, lunch break).