Archaic/transitive use meaning 'to naturalize' or 'to inhabit'; still attested in reputable dictionaries.
Translations
Seabirds denizen the rugged cliffs year-round.
Des oiseaux marins peuplent les falaises escarpées toute l’année.
The act denizened the refugees, allowing them to own property.
L’acte a naturalisé les réfugiés, leur permettant de posséder des biens.
Definitions
To grant the rights or status of a denizen; to naturalize. The act denizened the refugees, allowing them to own property.
To inhabit or populate (a place); to live in. Seabirds denizen the rugged cliffs year-round.
Synonyms
grant citizenship
admit (to residence)