n. sl. a contemptuous gesture with the thumb to the nose and the fingers spread out.
Phrases and idioms:
cock a snook (often foll. by at)
1 make this gesture.
2 register one's contempt (for a person, establishment, etc.).
Etymology: 19th c.: orig. unkn.
2.
n. a marine fish, Centropomus undecimalis, used as food.
Etymology: Du. snoek: see SNOEK
Useful english dictionary. 2012.