The Collaborative International Dictionary of English v.0.48:

Quay \Quay\, n. [F. quai. See Key quay.]
   A mole, bank, or wharf, formed toward the sea, or at the side
   of a harbor, river, or other navigable water, for convenience
   in loading and unloading vessels. [Written also key.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Quay \Quay\, v. t.
   To furnish with quays.
   [1913 Webster]

WordNet (r) 3.0 (2006):

quay
    n 1: wharf usually built parallel to the shoreline

Moby Thesaurus II by Grady Ward, 1.0:

35 Moby Thesaurus words for "quay":
   anchorage, anchorage ground, basin, berth, breakwater, bulkhead,
   dock, dockage, dockyard, dry dock, embankment, groin, harbor,
   harborage, haven, jetty, jutty, landing, landing place,
   landing stage, levee, marina, mole, moorings, pier, port,
   protected anchorage, road, roads, roadstead, seaport, seawall,
   shipyard, slip, wharf



Bouvier's Law Dictionary, Revised 6th Ed (1856):

QUAY, estates. A wharf at which to load or land goods, sometimes spelled
key.
     2. In its enlarged sense the word quay, means the whole space between
the first row of houses of a city, and the sea or river 5 L. R. 152, 215. So
much of the quay as is requisite for the public use of loading and unloading
vessels, is public property, and cannot be appropriated to private use, but
the rest may be, private property. Id. 201.



U.S. Gazetteer Counties (2000):

Quay -- U.S. County in New Mexico
   Population (2000):    10155
   Housing Units (2000): 5664
   Land area (2000):     2874.926116 sq. miles (7446.024141 sq. km)
   Water area (2000):    6.871701 sq. miles (17.797623 sq. km)
   Total area (2000):    2881.797817 sq. miles (7463.821764 sq. km)
   Located within:       New Mexico (NM), FIPS 35
   Location:             35.111229 N, 103.624597 W
   Headwords:
    Quay
    Quay, NM
    Quay County
    Quay County, NM


U.S. Gazetteer Places (2000):

Quay, OK -- U.S. town in Oklahoma
   Population (2000):    47
   Housing Units (2000): 20
   Land area (2000):     0.187661 sq. miles (0.486041 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.187661 sq. miles (0.486041 sq. km)
   FIPS code:            61450
   Located within:       Oklahoma (OK), FIPS 40
   Location:             36.160129 N, 96.711200 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Quay, OK
    Quay