safen

Verb

 * 1)  To make safe.
 * 2)  To protect a crop from injury from a herbicide by adding a safener.
 * 1)  To protect a crop from injury from a herbicide by adding a safener.
 * 1)  To protect a crop from injury from a herbicide by adding a safener.

Etymology
.

Noun

 * 1)  saphenous vein