- If something is big, it is large in size; tall, wide, long, or fat.
- He's bigger than me.
- I would like a big glass of milk.
- The tree was so big that you could see it over the top of the house.
- If something is big, it is important.
- Synonym: important
- That's a big problem!
- Someone's big brother or a big sister is one who is older than the person.
- I have a big brother who's stronger than you!