'Raiser' definitions:

Definition of 'raiser'

From: WordNet
noun
A bridge partner who increases the partner's bid
noun
Someone concerned with the science or art or business of cultivating the soil [syn: agriculturist, agriculturalist, cultivator, grower, raiser]

Definition of 'Raiser'

From: GCIDE
  • Raiser \Rais"er\ (r[=a]z"[~e]r), n. One who, or that which, raises (in various senses of the verb). [1913 Webster]