Sos (noun)

  1. A distress signal used to call for help in emergency situations.
  2. A signal or request for help or rescue, usually in a difficult or life-threatening situation.

Origin:

An acronym for the phrase "save our souls" which was used as a distress signal in morse code.

Examples:

  1. The ship sent out an SOS when it was sinking.
  2. The hikers sent out an SOS when they were lost.
  3. The airplane sent out an SOS before crashing.
  4. The pilot sent out an SOS before the engine failed.
  5. The sailor sent out an SOS before the storm hit.
Some random words: purism, contralto, physiologic