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 sustain the trying effect of; to bear up against and overcome; to endure; to resist.
To endure or survive an event or action without undue damage.
To pass to windward in a vessel, especially to beat 'round.
To break down, of rocks and other materials, under the effects of exposure to rain, sunlight, temperature, and air.
To expose to the weather, or show the effects of such exposure, or to withstand such effects.
To place (a hawk) unhooded in the open air.
Facing towards the flow of a fluid, usually air.
The short term state of the atmosphere at a specific time and place, including the temperature, relative humidity, cloud cover, precipitation, wind, etc.
Unpleasant or destructive atmospheric conditions, and their effects.
The direction from which the wind is blowing; used attributively to indicate the windward side.
A situation.