inedible

from WordNet (r) 3.0 (2006)

inedible
    adj 1: not suitable for food [syn: {inedible}, {uneatable}]
           [ant: {comestible}, {eatable}, {edible}]

from The Collaborative International Dictionary of English v.0.48

Inedible \In*ed"i*ble\, a. [LL. inedibilis. See {In-} not, and
   {Edible}.]
   Not edible; not fit for use as food. -- {In*ed`i*bil"i*ty},
   n.
   [Webster 1913 Suppl.]