Belgicus
Could not find Belgicis in Logeion dictionaries.
Belgicis Proper-name adjective: neuter ablative plural, Proper-name adjective: feminine ablative plural, Proper-name adjective: masculine ablative plural, Proper-name adjective: neuter dative plural, Proper-name adjective: feminine dative plural, Proper-name adjective: masculine dative plural of Belgicus