Source : Webster's Revised Unabridged Dictionary (1913)

Melilot \Mel"i*lot\ (-l[o^]t), n. [F. m['e]lilot, L. melilotus,
   fr. Gr. ?, ?, a kind of clover containing honey; me`li honey
   + ? lotus.] (Bot.)
   Any species of {Melilotus}, a genus of leguminous herbs
   having a vanillalike odor; sweet clover; hart's clover. The
   blue melilot ({Melilotus c[ae]rulea}) is used in Switzerland
   to give color and flavor to sapsago cheese.

Source : WordNet®

melilotus
     n : erect annual or biennial plant grown extensively especially
         for hay and soil improvement [syn: {melilot}, {sweet
         clover}]