Source : Webster's Revised Unabridged Dictionary (1913)

Pell-mell \Pell`-mell"\, n.
   See {Pall-mall}.

Source : WordNet®

pell-mell
     adj : with undue hurry and confusion; "a helter-skelter kind of
           existence with never a pause"; "a pell-mell dash for
           the train" [syn: {helter-skelter}]
     adv : in a wild or reckless manner; "dashing harum-scarum all over
           the place"; "running pell-mell up the stairs" [syn: {harum-scarum}]