Definition of sages:
(n) :
The plant Salvia officinalis and savory spice produced from it; also planted for ornamental purposes.
(n) :
A very wise person or spiritual teacher; someone of gravity and wisdom, especially, a teacher venerable for years, and of sound judgment and prudence; a grave or stoic philosopher.
(adj) :
Wise.
(n) :
Any plant in the genus Salvia.
(n) :
Any of a number of plants such as sagebrush considered to be similar to Salvia officinalis, mostly because they are small shrubs and have gray foliage or are aromatic.
(v) :
(4chan slang, Internet slang) The act of using the word or option sage in the email field or a checkbox of an imageboard when posting a reply.