The Collaborative International Dictionary of English v.0.48:

Marrot \Mar"rot\, n. (Zool.)
   (a) The razor-billed auk. See Auk.
   (b) The common guillemot.
   (c) The puffin. [Prov. Eng.] [Written also marrott, and
       morrot.]
       [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Morrot \Mor"rot\, n. (Zool.)
   See Marrot.
   [1913 Webster]