Boii refers to a group of ancient Celtic tribes that inhabited parts of Central Europe, particularly in what is now modern-day Czech Republic and Austria. They were known for their warrior culture and played a significant role in the conflicts between the Roman Empire and various Celtic tribes during the first few centuries BCE. The Boii are often associated with the migration of Celtic peoples across Europe. They are believed to have settled in the region around the 4th century BCE and were known for their distinctive pottery and metalwork. Their name is also linked to the modern name of Bohemia, a historical region in the Czech Republic.