What does "salivate" mean?

Salivate: To produce an abnormal flow of saliva in; to produce salivation or ptyalism in, as by the use of mercury. over.; as, salivate over the prospects of high profits from an enterprise. Note: Probably influenced by the experiments of Pavlov, who trained dogs to salivate at the sound of a bell, by previously ringing the bell immediately prior to feeding them.