1. to have or include something as a part or element
2. to hold or have capacity for something within limits or boundaries
3. to keep something under control or within limits

Examples

• This box contains all my old photographs.
• The report contains important information about climate change.
• Orange juice contains vitamin C.
• The stadium contains 50,000 seats.
• Please contain your excitement until the announcement.
• The firefighters worked to contain the blaze.
• This bottle contains two liters of water.