To Subscribe to a Certain Activity or Contract

This page is the CodyCross answer for the clue below from Casino, Group 271, Puzzle 2 (Martingale Strategy).

Question is: To Subscribe to a Certain Activity or Contract

and the answer is: SIGNUP

Word Meaning:

SIGN UP — (transitive) To add a name to the list of people who are participating in something.

Definitions from Wiktionary.