1. punctuation marks (:) used to introduce a list, explanation, or quotation
Usage: plural of colon
2. the main parts of the large intestine in humans and animals
Usage: plural of colon; anatomy

Examples

• The teacher explained when to use colons in writing.
• Remember to place colons before lists in your essays.
• Both colons in that sentence were used correctly.
• The doctor examined the patient’s colons during the procedure.
• Colons can become inflamed in certain medical conditions.
• The grammar book has a chapter about semicolons and colons.