a children's game involving placing S's and O's on a grid, and collecting points by creating an "SOS" sequence, played with alternating turns by opponents
Save Our Ship (SOS) is the commonly used description for the International Morse code distress signal (· · · — — — · · ·). This distress signal was first adopted by the German government in radio regulations effective April 1, 1905, and became the worldwide standard when it was included in the second International Radiotelegraphic Convention, which was signed on November 3, 1906, and became effective on July 1, 1908
An SOS is a signal which indicates to other people that you are in danger and need help quickly. The ferry did not even have time to send out an SOS
{i} letters which represent the radiotelegraphic signal (... --- ...) used by ships in distress; any cry for help