To lay down a challenge; to provide a test of commitment (often one which carries a high risk) to a cause.
To create a real or artificial boundary or distinction between (two places, people or things).
To indicate the threshold or level above which something will become unacceptable or will provoke a response; to create a boundary and imply or declare that its crossing will provoke a (negative) response.
To have recourse (to), now especially from necessity or frustration.
To repeat a sorting process; sort again.
To fall back; to revert.
To make one's way, go (to).
A place where people go for recreation, especially one with facilities such as lodgings, entertainment, and a relaxing environment.
Recourse, refuge (something or someone turned to for safety).
An act of sorting again.