Definition of "Pet" :

noun: using a computerized radiographic technique to examine the metabolic activity in various tissues (especially in the brain)

noun: a domesticated animal kept for companionship or amusement

noun: a fit of petulance or sulkiness (especially at what is felt to be a slight)

noun: a special loved one

verb: stroke or caress in an erotic manner, as during lovemaking

verb: stroke or caress gently

"Pet the lamb."

adjective: preferred above all others and treated with partiality