gammelgammelfarmor betyder på engelska

great-great-grandmother▼(The mother of someone’s great-grandparent)
noun
[UK: ˈɡreɪt ˈɡreɪt ˈɡræn ˌmʌð.ə(r)] [US: ˈɡreɪt ˈɡreɪt ˈɡræn ˌmʌð.r̩]