The verb signify has 3 senses (first 2 from tagged texts)
1. (3) mean, intend, signify, stand for -- (denote or connote; "`maison' means `house' in French"; "An example sentence would show what this word means")
2. (1) signify -- (convey or express a meaning; "These words mean nothing to me!"; "What does his strange behavior signify?")
3. signify -- (make known with a word or signal; "He signified his wish to pay the bill for our meal")