bereavement leave; condolence leave
Leave taken from work or school due to the death of a close relative; often a set number of days.
I took bereavement leave because my grandfather passed away.
Standard spelling; 忌引き is the common way to write きびき.
Alternate spelling using 忌引 instead of 忌引き; both are seen.
Compound of 忌引き (きびき, 'bereavement absence') and 休暇 (きゅうか, 'leave, holiday'). 忌引き itself derives from 忌 (き, 'mourning') + 引き (ひき, 'pulling, drawing'), referring to the period of withdrawal from normal activities.