The Collaborative International Dictionary of English v.0.48:

Prow \Prow\, n. [F. proue (cf. Sp. & Pg. proa, It. prua), L.
   prora, Gr. ?, akin to ? before. See Pro-, and cf. Prore.]
   The fore part of a vessel; the bow; the stem; hence, the
   vessel itself. --Wordsworth.
   [1913 Webster]

         The floating vessel swum
         Uplifted, and secure with beaked prow
         rode tilting o'er the waves.             --Milton.
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The Collaborative International Dictionary of English v.0.48:

Prow \Prow\, n.
   See Proa.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Prow \Prow\, a. [Compar. Prower; superl. Prowest.] [OF.
   prou, preu, F. preux, fr. L. pro, prod, in prodesse to be
   useful. See Pro-, and cf. Prude.]
   Valiant; brave; gallant; courageous. [Archaic] --Tennyson.
   [1913 Webster]

         The prowest knight that ever field did fight.
                                                  --Spenser.
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The Collaborative International Dictionary of English v.0.48:

Prow \Prow\, n. [OE. & OF. prou. See Prow, a.]
   Benefit; profit; good; advantage. [Obs.]
   [1913 Webster]

         That shall be for your hele and for your prow.
                                                  --Chaucer.
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WordNet (r) 3.0 (2006):

prow
    n 1: front part of a vessel or aircraft; "he pointed the bow of
         the boat toward the finish line" [syn: bow, fore,
         prow, stem]