Search Result for "bulk mail":
Wordnet 3.0

NOUN (1)

1. mail consisting of large numbers of identical items (circulars or advertisements) sent to individual addresses at less than 1st-class rates and paid for in one lot; 



WordNet (r) 3.0 (2006):

bulk mail
    n 1: mail consisting of large numbers of identical items
         (circulars or advertisements) sent to individual addresses
         at less than 1st-class rates and paid for in one lot