Noun
A standard formula to end a letter.
Hypernym: parting phrase
Antonyms: opening form, (thereof the hypernym) salutation, greeting form, address form, form of address
(transferred) A standard formula to end a speech.
(US) A form in an authority filled to formally document the closing a case.
(US) A form used to document an important legal transaction.
Holonym: closing document
(programming) A method to end an implemented functionality.
Source: en.wiktionary.org