B1
objects positioned one on top of another
Dictionary examples:
The office had a pile of unfinished reports taller than the boss! (0.0)
The pile of unread emails on my screen is giving me nightmares! (0.0)
The pile of homework on my desk is threatening to take over my room! (0.0)
a pile of books (20.4)
a large pile of sand (29.2)
The clothes were arranged in piles on the floor. (31.5)