1. [n]  a leisurely walk (usually in some public place)
2. [v]  walk leisurely

AMBLE is a 5 letter word that starts with A.

1. \Am"ble\, v. i. [imp. & p. p. {Ambled}; p. pr. & vb. n.
   {Ambling}.] [F. ambler to amble, fr. L. ambulare to walk, in
   LL., to amble, perh. fr. amb-, ambi-, and a root meaning to
   go: cf. Gr. ? to go, E. base. Cf. {Ambulate}.]
   1. To go at the easy gait called an amble; -- applied to the
      horse or to its rider.
   2. To move somewhat like an ambling horse; to go easily or
      without hard shocks.
            The skipping king, he ambled up and down. --Shak.
            Sir, your wit ambles well; it goes easily. --Shak.
   

2. \Am"ble\, n.
   1. A peculiar gait of a horse, in which both legs on the same
      side are moved at the same time, alternating with the legs
      on the other side. ``A fine easy amble.'' --B. Jonson.
   2. A movement like the amble of a horse.