Definition of tannest:
(n) :
A light, brown-like colour.
(n) :
A darkening of the skin resulting from exposure to sunlight or similar light sources.
(n) :
The bark of an oak or other tree from which tannic acid is obtained.
(adj) :
Yellowish-brown.
(adj) :
Having dark skin as a result of exposure to the sun or an artificial process intended to mimic this effect.
(v) :
(transitive, intransitive) To change to a tan colour due to exposure to the sun.