Freshen \Fresh"en\, v. t. [imp. & p. p. Freshened; p. pr. & vb. n. Freshening]

1. To make fresh; to separate, as water, from saline ingredients; to make less salt; as, to freshen water, fish, or flesh.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Freshen \Fresh"en\, v. i.

1. To grow fresh; to lose saltness.

2. To grow brisk or strong; as, the wind freshens.

Source: Webster's Revised Unabridged Dictionary (1913)