A mound of earth built by ants as a nest for their colony.
Early 17th century, from anth- (of ants) + hill.
- The anthill was located near the edge of the forest.
- The ants have made an anthill.
- The anthill was an impressive sight, standing several feet tall.
- Many species of ants build anthills.
- The anthill is home to thousands of ants.