To search for something; to rummage.
To search for gems, gold, etc., on the surface or in abandoned workings.
To be troublesome.
To elicit information; to ferret out.
To find by looking: to hunt out.
To be vigilant and aware often as an imperative to alert a person to danger.
To be facing (used with "on").
Used other than figuratively or idiomatically: see look, out.