Webster's English Dictionary

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expire

ex.pire \ik-'spi-(*)r, oftenest for vi3 and vt2 ek-\ vb [ME expiren, fr. MF 
   or L; MF expirer, fr. L exspirare, fr. Xex- + spirare to breathe 1: to 
   breathe one's last breath : DIE  2: to come to an end  3: to emit the 
   breath  obs  1: CONCLUDE  2: to breathe out from or as if from the lungs  
   archaic  3: to give off