fúrókorona bedeutet auf Englisch

bit [bits]▼◼◼◼noun
[UK: bɪt] [US: ˈbɪt]

boring bit▼noun
[UK: ˈbɔːr.ɪŋ bɪt] [US: ˈbɔːr.ɪŋ ˈbɪt]

boring-bit▼noun
[UK: ˈbɔːr.ɪŋ bɪt] [US: ˈbɔːr.ɪŋ ˈbɪt]

drilling bit▼noun