stimulation in WordNet English dictionary

1. mutual sexual fondling prior to sexual intercourse
   foreplay  arousal  stimulation 
   
2. any stimulating information or event; acts to arouse action
   stimulation  stimulus  stimulant  input 
   
3. the act of arousing an organism to action
   stimulation 
   
4. (physiology) the effect of a stimulus (on nerves or organs etc.)
   stimulation