Entry 1 sense Webster, 1913 Canker blossom /kăng'-kẽr bläs'-əm/ · Can·ker blos·som · IPA 01 That which blasts a blossom as a canker does. 1. That which blasts a blossom as a canker does.[Obs.] “O me! you juggler! you canker blossom! You thief of Love!” — Shak.