The Collaborative International Dictionary of English v.0.48:
Smither \Smith"er\ (sm[i^][th]"[~e]r), n.
1. Light, fine rain. [Prov. Eng.]
[1913 Webster]
2. pl. Fragments; atoms; finders. [Prov. Eng.]
[1913 Webster]
Smash the bottle to smithers. --Tennyson.
[1913 Webster]