Source : Webster's Revised Unabridged Dictionary (1913)

Sola \So"la\, n. [Native name.] (Bot.)
   A leguminous plant ({[AE]schynomene aspera}) growing in moist
   places in Southern India and the East Indies. Its pithlike
   stem is used for making hats, swimming-jackets, etc. [Written
   also {solah}, {shola}.]

Sola \So"la\, a. [L., fem. of solus.]
   See {Solus}.

Solus \So"lus\, masc. a., Sola \So"la\, fem. a.[L.]
   Alone; -- chiefly used in stage directions, and the like.

Source : WordNet®

sola
     See {solum}