This is the 7712th most frequent Polish word.
machoniowie
The word "machoniowie" does not exist in Polish. It might be a misspelling or non-standard term.
In this sentence, 'Machoniowie' functions as the plural nominative case of a proper noun, indicating a family surname, akin to 'The Smiths' in English.
Machoniowie zamieszkali w tym domu wiele lat temu.
The Mahoniowie family moved into this house many years ago.
Here, 'Machoniów' is used in the accusative plural form, showing the action of not seeing directed at that family, utilizing Polish noun declension rules.
Nie widziałem Machoniów od ostatnich świąt Bożego Narodzenia.
I haven't seen the Mahoniowie family since last Christmas.
In this case, 'Machoniami' is used in the instrumental case, indicating an action performed together with the Mahoniowie family, demonstrating another aspect of Polish grammatical cases.