To lose remembrance of.
To unintentionally not do, neglect.
To unintentionally leave something behind.
To cease remembering.
Euphemism for fuck, screw (a mild oath).
To add one's own name to the list of people who are participating in something (including amateur, but not professional, teams)
To agree to purchase some good or service.
To add a name to the list of people who are participating in something.