English equivalent to Graukappe?

Hi, my daughter refers to senior citizens as ‘Graukappe’ which basically means ‘gray cap’. Now, is there any English equivalent to this German expression?

Many thanks,
Torsten[YSaerTTEW443543]

TOEIC listening, question-response: How many sick days do we get each year?[YSaerTTEW443543]