The Collaborative International Dictionary of English v.0.48:

Periagua \Per`i*a"gua\ (p[e^]r`[i^]*[aum]"gw[.a]), n.
   See Pirogue.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Pirogue \Pi*rogue"\, n. [Originally an American Indian word: cf.
   F. pirogue, Sp. piroga, piragua.]
   A dugout canoe; by extension, any small boat. [Written
   variously periauger, perogue, piragua, periagua,
   etc.]
   [1913 Webster]