write one’s name on (a letter, card, or similar item) to identify oneself as the writer or sender
commit oneself to employment, membership in a society, or some other undertaking
commit oneself to a period of employment or education or to some other undertaking
sign a receipt to confirm that one has received (something delivered or handed over)
record that someone is entitled to miss work, typically because of illness
authorize someone’s release or record their departure by signing a register
officially relinquish rights or property by signing a deed
a line made up of dots or dashes (often used in reference to the space left for a signature on a contract)