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Noun usaf has 1 sense
  1. United States Air Force, U. S. Air Force, US Air Force, USAF - the airforce of the United States of America; defends the United States through control and exploitation of air and space
    --1 is a kind of air force, airforce
    --1 is a part of
     Department of Defense, Defense Department, United States Department of Defense, Defense, DoD
     --1 has parts:
     Air Force Research Laboratory, AFRL; United States Air Force Academy, US Air Force Academy; Air Combat Command, ACC; Air Force Space Command, AFSPC; Air National Guard, ANG; Air Force Intelligence Surveillance and Reconnaissance, Air Force ISR, AFISR
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