picket in WordNet English dictionary

1. a person employed to keep watch for some anticipated event
   lookout  lookout man  sentinel  sentry  watch  spotter  scout  picket 
   
2. a wooden strip forming part of a fence
   picket  pale 
   
3. a form of military punishment used by the British in the late 17th century in which a soldier was forced to stand on one foot on a pointed stake
   picket  piquet 
   
4. a vehicle performing sentinel duty
   picket 
   
5. a detachment of troops guarding an army from surprise attack
   picket 
   
6. a protester posted by a labor organization outside a place of work
   picket 
   

1. fasten with a picket
   "picket the goat"
   picket 
   
2. serve as pickets or post pickets
   "picket a business to protest the layoffs"
   picket