dating

(verb): To note the time or place of writing or executing; to express in an instrument the time of its execution.
(verb): To note or fix the time of (an event); to give the date of.
(verb): To determine the age of something.
(verb): To take (someone) on a date, or a series of dates.
(verb): (by extension) To have a steady relationship with; to be romantically involved with.
(verb): (by extension) To have a steady relationship with each other; to be romantically involved with each other.
(verb): To make or become old, especially in such a way as to fall out of fashion, become less appealing or attractive, etc.
(verb): (with from) To have beginning; to begin; to be dated or reckoned.
(noun): A form of romantic courtship typically between two individuals with the aim of assessing the other's suitability as a partner in an intimate relationship or as a spouse.
(noun): An estimation of the age of an artifact, biological vestige, linguistic usage, etc.
(noun): The setting of a date on which an event or transaction is to take place or take effect.