| PEN | thrifty in small matters only |
|---|---|
| PEN | any of several plants of the genus Thlaspi |
| PEN | erect hairy branching American herb having purple-blue flowers |
| PEN | Eurasian perennial mint have small lilac-blue flowers and ovate leaves |
| PEN | aromatic oil from American pennyroyal |
| PEN | oil from European pennyroyal having a odor like mint |
| PEN | a unit of apothecary weight equal to 24 grains |
| PEN | an inexpensive fipple flute |
| PEN | the amount that can be bought for a penny |
| PEN | a river in central Maine flowing into Penobscot Bay |
| PEN | a member of the Algonquian people belonging to the Abnaki confederacy and living in the Penobscot valley in northern Maine |
| PEN | an inlet of the Atlantic in eastern Maine |