1. a large tree that produces acorns and has hard, durable wood
2. the hard wood from an oak tree, used for furniture and construction

1. made of oak wood

Examples

• The ancient oak in our backyard is over 200 years old.
• Squirrels gathered acorns from the oak trees in the park.
• The dining table was made of solid oak.
• Oak furniture is known for its durability and beauty.
• The oak door was heavy and difficult to move.
• Many oak trees lose their leaves in autumn.
• The carpenter preferred working with oak because of its strength.