9-Letter Words Starting: PEN

• impose a penalty on; inflict punishment on

• impose a penalty on; inflict punishment on

• an oxide containing five atoms of oxygen in the molecule

• a small pocketknife; originally used to cut quill pens

• in a pensive manner

• Careful with small amounts of money or over small matters.

• A name given to several unrelated plants around the world. In general they all have round leaves of about the shape and size of a (pre-decimal) penny.

• regulator consisting of a valve or gate that controls the rate of water flow through a sluice

• conduit that carries a rapid flow of water controlled by a sluicegate