defense secretary is a noun meaning "the person who holds the secretaryship of the Defense Department". It carries 2 recorded senses.
the person who holds the secretaryship of the Defense Department
“the first Defense Secretary was James V. Forrestal who was appointed by Truman”
the position of the head of the Department of Defense
“the position of Defense Secretary was created in 1947”
Definitions, synonyms and semantic relations for defense secretary come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.