1. 
   Safeword
   [sports] A safeword, as used in sports, is a code word used by a player to avoid impending injury. In certain contact sports such as rugby and Professional wrestling , when a player feels an opposing players actions will lead to him or herself being seriously injured, he may utter a safeword...
   Found op http://en.wikipedia.org/wiki/Safeword_(sports)
   
   
2. 
   Safeword
   A safeword is a code word or series of code words that are sometimes used in BDSM for a submissive (or "bottom") to unambiguously communicate their physical or emotional state to a dominant (or "top"), typically when approaching, or crossing, a physical, emotional, or moral boundary. Some safewords...
   Found op http://en.wikipedia.org/wiki/Safeword
   
   

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