The Collaborative International Dictionary of English v.0.48:

Armada \Ar*ma"da\ ([aum]r*m[=a]"d[.a] or [aum]r*m[aum]"d[.a]),
   n. [Sp. armada, L. as if armata (sc. classic fleet), fr.
   armatus, p. p. of armare. See Arm, v. t. Army.]
   A fleet of armed ships; a squadron. Specifically, the Spanish
   fleet which was sent to assail England, a. d. 1558.
   [1913 Webster]

U.S. Gazetteer (1990):

Armada, MI (village, FIPS 3520)
  Location: 42.84100 N, 82.88346 W
  Population (1990): 1548 (514 housing units)
  Area: 1.8 sq km (land), 0.0 sq km (water)
  Zip code(s): 48005

Moby Thesaurus II by Grady Ward, 1.0:

24 Moby Thesaurus words for "armada":
   Naval Construction Battalion, RN, Royal Navy, Seabees, USN,
   United States Navy, argosy, coast guard, division, escadrille,
   fleet, flotilla, marine, merchant fleet, merchant marine,
   merchant navy, mosquito fleet, naval forces, naval militia,
   naval reserve, navy, squadron, task force, task group