The Collaborative International Dictionary of English v.0.48:

Dhow \Dhow\, n. [Ar. d[=a]o?]
   A coasting vessel of Arabia, East Africa, and the Indian
   Ocean. It has generally but one mast and a lateen sail. [Also
   written dow.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dow \Dow\, n.
   A kind of vessel. See Dhow.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dow \Dow\, v. t. [F. douer. See Dower.]
   To furnish with a dower; to endow. [Obs.] --Wyclif.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dow \Dow\ (dou), prop. n. (Finance)
   shortened form of the Dow-Jones Index or Dow Jones
   Industrial Average; as, the Dow rose 100 points today.
   [PJC]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

DOW
       Direct OverWrite (MO, ...)