Emily Dickinson Lexicon

QUAY, n. [ke; Fr. quai; D. kaai; Arm. qae; Ir. ceigh. If this word is radically the same as key, the sense is that which fastens or secures. Class Cg or Gk.]

A key; a mole or wharf, constructed in harbors for securing vessels and receiving goods unladen or to be shipped on board.