Yes, colons is a Scrabble word!

Noun

1. The part of the large intestine between the cecum and the rectum; it extracts moisture from food residues before they are excreted

2. The basic unit of money in El Salvador; equal to 100 centavos

3. The basic unit of money in Costa Rica; equal to 100 centimos

4. A port city at the Caribbean entrance to the Panama Canal

5. A punctuation mark (:) used after a word introducing a series or an example or an explanation (or after the salutation of a business letter)