1. Literally, to release saliva from one's mouth onto someone or something. Can you please come in here and get your dog before he salivates all over me?
2. To be very excited about or interested in something. My girlfriend has been salivating over these fancy speakers that just went on sale.The last time I went to that place, this creepy old guy started salivating over me at the bar.
salivate over
v.
To be very eager about, excited about, or desirous for something: The fans of the rock group salivated over the newest CD.