The Collaborative International Dictionary of English v.0.48:

Gallipot \Gal"li*pot\, n. [Prob. fr. OD. gleypot, the first part
   of which is possibly akin to E. glad. See Glad, and Pot.]
   A glazed earthen pot or vessel, used by druggists and
   apothecaries for containing medicines, etc.
   [1913 Webster]