Wordnet 3.0
ADJECTIVE (1)
1. 
 (of a structural member) supporting no vertical weight other than its own; 
- Example: "they took out a nonbearing wall"
The Collaborative International Dictionary of English v.0.48:
nonbearing \nonbearing\ adj.
   1. (Arch.) supporting no vertical weight other than its own;
      -- of a structural member; as, a non-bearing wall.
      [Narrower terms: dividing(prenominal) ] {bearing
      [WordNet 1.5]
WordNet (r) 3.0 (2006):
nonbearing
    adj 1: (of a structural member) supporting no vertical weight
           other than its own; "they took out a nonbearing wall"
           [ant: bearing(a)]