Brim
Definition 1 of 3
Pro Tip 1/3
Container Capacity
Use 'brim' to emphasize a container is as full as possible, leaving no space. The jar of cookies was filled to the brim.
Pro Tip 2/3
Overflowing Implied
'Brim' can imply the possibility of spilling due to being overly full. The boiling pot was bubbling to the brim.
Pro Tip 3/3
Literal Edge
In physical contexts, 'brim' refers to the actual upper boundary of an object. She measured the water up to the cup's brim.