Definition of "pouch"

[…] form a large Pouch or Cyst

1747, Samuel Sharp, A Treatise on the Operations of Surgery

And, to name no more, the common Heron hath its most remarkable Parts adapted to this Service; long Legs for wading; and a long Neck answerable thereto to reach Prey; a wide, extensive Throat to pouch it; long Toes, with strong hooked Talons […]

1713, William Derham, Physico-theology, or a Demonstration of the Being and Attributes of God‎

[…] but if they shake the line and move, after they have remained still three or four minutes, you may conclude the fish has pouched the bait and feels the hooks, then wind up your slack and strike, but not violently, and always mind to keep the point of your rod a little raised while you are playing and killing your fish […]

1820, Thomas Frederick Salter, The Trollerʻs Guide: A New and Complete Practical Treatise on the Art of Trolling Or Fishing for Jack and Pike‎

He pouched his mouth, and reared himself up and swelled; but answered me not.

1754, Samuel Richardson, The History of Sir Charles Grandison

And for the value of the gowden piece , it shall never be said I pouched her siller

1822, [Walter Scott], The Pirate. […], volumes (please specify |volume=I to III), Edinburgh: […] [James Ballantyne and Co.] for Archibald Constable and Co.; London: Hurst, Robinson, and Co.