MAUND is a 5 letter word that starts with M.

1. \Maund\, n. [AS. mand, mond.]
   A hand basket. [Obs.] --Herrick.
   
   

2. \Maund\, n. [Hind, & Per. man.]
   An East Indian weight, varying in different localities from
   25 to about 82 pounds avoirdupois.
   
   

3. \Maund\, Maunder \Maund"er\, v. i. [Cf. F. mendier to beg,
   E. mendicant.]
   1. To beg. [Obs.] --B. Jonson. Beau. & Fl.
   
   2. To mutter; to mumble; to grumble; to speak indistinctly or
      disconnectedly; to talk incoherently.
   
            He was ever maundering by the how that he met a
            party of scarlet devils.              --Sir W.
                                                  Scott.