subscription

noun | \ səb-ˈskrip-shən \ | sub·scrip·tion

1. : the act of signing one's name (as in attesting or witnessing a document)

2. : something that is subscribed; specifically : a sum subscribed or pledged a charitable subscription : a sum subscribed or pledged a charitable subscription

3. : an agreement to purchase securities (as stocks) of a new issue and especially of a prospective corporation — compare warrant 3b