The Collaborative International Dictionary of English v.0.48:

Snook \Snook\ (sn[=oo]k), v. i. [Prov. E. snook to search out,
   to follow by the scent; cf. Sw. snoka to lurk, LG.
   sn["o]ggen, snuckern, sn["o]kern, to snuffle, to smell about,
   to search for.]
   To lurk; to lie in ambush. [Obs.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Snook \Snook\, n. [D. snoek.] (Zool.)
   (a) A large perchlike marine food fish (Centropomus
       undecimalis) found both on the Atlantic and Pacific
       coasts of tropical America; -- called also ravallia,
       and robalo.
   (b) The cobia.
   (c) The garfish.
       [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Robalo \Rob"a*lo\, n. [Sp. r['o]balo.]
   Any of several pikelike marine fishes of the West Indies and
   tropical America constituting the family Oxylabracidae,
   esp. the largest species (Oxylabrax undecimalis, syn.
   Centropomus undecimalis), a valuable food fish called also
   snook, the smaller species being called

WordNet (r) 3.0 (2006):

snook
    n 1: large tropical American food and game fishes of coastal and
         brackish waters; resemble pike

U.S. Gazetteer Places (2000):

Snook, TX -- U.S. city in Texas
   Population (2000):    568
   Housing Units (2000): 252
   Land area (2000):     2.010121 sq. miles (5.206189 sq. km)
   Water area (2000):    0.003327 sq. miles (0.008617 sq. km)
   Total area (2000):    2.013448 sq. miles (5.214806 sq. km)
   FIPS code:            68576
   Located within:       Texas (TX), FIPS 48
   Location:             30.490162 N, 96.469804 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Snook, TX
    Snook