Definition of four:

• Fr. In old French law. An oven or bake-house. Four banal, an oven, owned bythe seignior of the estate, to which the tenants were obliged to bring their bread forbaking. Also the proprietary right to maintain such an oven.
• Hands and feet.
• The sum of four units; four units or objects.
• A symbol representing four units, as 4 or iv.
• things of the same kind, esp. four horses; as, a chariot and four.
• Two and two added.
• The sum of three and one.
• A four- oared boat or its crew.
• Four things of the same kind, esp. four horses; as, a chariot and four.
• Two and two.
• Twice two.
• Consisting of one more than three.

Usage examples for four

1. After three or four weeks?  Ontario Teachers' Manuals: Nature Study by Ontario Ministry of Education

2. It was only four o'clock then, but in that place quite dark.  A Singer from the Sea by Amelia Edith Huddleston Barr

3. But your room means three or four other people's room, don't it?  A Letter of Credit by Susan Warner

4. " It's four long years since I felt as I do to- night," he said.  Winston of the Prairie by Harold Bindloss