'Softener' definitions:
Definition of 'softener'
(from WordNet)
noun
A substance added to another to make it less hard
Definition of 'Softener'
From: GCIDE
- Softener \Sof"ten*er\, n. One who, or that which, softens. [Written also, less properly, softner.] [1913 Webster] [1913 Webster]