count·er 3 
(kountər)
(kountər)n.
One that counts, especially an electronic or mechanical device that automatically counts occurrences or repetitions of phenomena or events.
- pressure drag
- pressure gauge
- pressure group
- pressure point
- pressure suit
- pressure-tube anemometer
- pressurization
- pressurize
- pressurizer
- presswork
- Prester John
- presternum
- prestidigitation
- prestidigitator
- prestige
- prestigious
- prestigiously
- prestigiousness
- prestissimo
- presto
- Preston
- presumable
- presumably
- presume
- presumedly