The Collaborative International Dictionary of English v.0.48:

Spatulate \Spat"u*late\, a. [NL. spatulatus.] (Nat. Hist.)
   Shaped like spatula, or like a battledoor, being roundish,
   with a long, narrow, linear base. [Also written
   spathulate.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

spatulate
    adj 1: (of a leaf shape) having a broad rounded apex and a
           narrow base [syn: spatulate, spatula-shaped]