Source : Webster's Revised Unabridged Dictionary (1913)

Marly \Marl"y\, a. [Compar. {Marlier}; superl. {Marliest}.]
   Consisting or partaking of marl; resembling marl; abounding
   with marl.

Source : WordNet®

marly
     adj : of or relating to or resembling or abounding in marl