What does the word tense mean?

Usage examples for tense

  1. " We've got to turn, sis," he said, in a tense, sharp voice. – The Girl Aviators and the Phantom Airship by Margaret Burnham
  2. There was a tense silence, which O'Reilly broke by saying, " I guess 'Vittles' isn't a very good game, after all." – Rainbow's End by Rex Beach
  3. A strange, tense feeling was growing in the place. – The Place Beyond the Winds by Harriet T. Comstock