Open English Wordnet
Verbs
(v)subscribeoffer to buy, as of stocks and shares“The broker subscribed 500 shares” (v)sign, subscribemark with one's signature; write one's name (on)“She signed the letter and sent it off”,
“Please sign here” (v)pledge, subscribepay (an amount of money) as a contribution to a charity or service, especially at regular intervals“I pledged $10 a month to my favorite radio station”