Real Dictionary

bulge
If there is a bulge in something, there is a sudden large increase in it.
If you say that something is bulging with things, you are emphasizing that it is full of them.
countable noun: Bulges are lumps that stick out from a surface which is otherwise flat or smooth.
verb: If someone's eyes or veins are bulging, they seem to stick out a lot, often because the person is making a strong physical effort or is experiencing a strong emotion.
verb: If something such as a person's stomach bulges, it sticks out.

bulge in American English
an outward swelling; protuberance
to swell or bend outward; protrude or project
intransitive verb: to swell or bend outward; be protuberant
noun
noun: a rounded projection, bend, or protruding part; protuberance; hump
transitive verb: to make protuberant; cause to swell