Source : Webster's Revised Unabridged Dictionary (1913)

Jacksnipe \Jack"snipe`\, n. (Zo["o]l.)
   (a) A small European snipe ({Limnocryptes gallinula}); --
       called also {judcock}, {jedcock}, {juddock}, {jed}, and
       {half snipe}.
   (b) A small American sandpiper ({Tringa maculata}); -- called
       also {pectoral sandpiper}, and {grass snipe}.

Source : WordNet®

jacksnipe
     n 1: a small short-billed Old World snipe [syn: {half snipe}, {Limnocryptes
          minima}]
     2: American sandpiper that inflates its chest when courting
        [syn: {pectoral sandpiper}, {Calidris melanotos}]