pet

a domesticated animal kept for companionship or amusement

a special loved one

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

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

stroke or caress gently; "pet the lamb"

stroke or caress in an erotic manner, as during lovemaking

preferred above all others and treated with partiality; "the favored child"