The Collaborative International Dictionary of English v.0.48:

Crare \Crare\ (kr?r), n. [OF. craier, creer, croyer, ship of
   war, LL. craiera, creyera, perh. from G. krieger warrior, or
   D. krijger.]
   A slow unwieldy trading vessel. [Obs.] [Written also
   crayer, cray, and craie.] --Shak.
   [1913 Webster]