A children's game in which players take turns to place S's and O's on a grid, collecting points by creating an "SOS" sequence.
The conventional Morse code call made by a ship in distress.
To be vigilant and aware often as an imperative to alert a person to danger.
To find by looking: to hunt out.
To be facing (used with "on").
Used other than figuratively or idiomatically: see look, out.