stake-out 
noun informal
A period of secret surveillance of a building or an area by police in order to observe someone’s activities: they were looking for a vantage point for a stake-out...
- The raid was the culmination of weeks of hard intelligence-gathering, of stake-outs and investigation.
- He admitted he never took a police photographer or another officer along on his stake-outs, nor did he take a fingerprint expert to dust for print impressions at the apartment after the raid, saying it was not the practice to do so.
- The police reacted on information they received and held a stake-out from 09: 00 outside the bank's premises, on the corners of Rissik, Loveday and Main streets.
- stammerer
- stammering
- stammeringly
- stamp
- Stamp Act
- stamp collecting
- stamp collector
- stamp duty
- stamped addressed envelope
- stampede
- stampeder
- stamper
- stamp hinge
- stamping ground
- stamp mill
- stamp office
- stamp one's authority (or personality or style etc.) on
- stamp paper
- stamp something out
- stan
- stance
- stanch
- stanchion
- stanchioned
- stand