| pi | a meadow frog of eastern North America |
|---|---|
| pi | American plant having spikes of blue flowers and growing in shallow water of streams and ponds |
| pi | American plant having spikes of blue flowers and growing in shallow water of streams and ponds |
| pi | aquatic or bog plants |
| pi | 1 species: chaparral pea |
| pi | spiny evergreen xerophytic shrub having showy rose-purple flowers and forming dense thickets |
| pi | a wooden strip forming part of a fence |
| pi | a vehicle performing sentinel duty |
| pi | a detachment of troops guarding an army from surprise attack |
| pi | a person employed to watch for something to happen |
| pi | a protester posted by a labor organization outside a place of work |
| pi | fasten with a picket |