| pinweed | <botany> Any plant of the genus Lechea, low North American herbs with branching stems, and very small and abundant leaves and flowers. Source: Websters Dictionary (01 Mar 1998) |
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| pinworm | <zoology> A small nematoid worm (Oxyurus vermicularis), which is parasitic chiefly in the rectum of man. It is most common in children and aged persons. Source: Websters Dictionary (01 Mar 1998) |
| pinworm vaginitis | Vaginitis caused by Enterobius vermicularis. Senile vaginitis, atrophic vaginitis resulting from withdrawal of oestrogen stimulation of mucosa, often assuming the form of adhesive vaginitis. Synonym: vaginitis senilis. (05 Mar 2000) |
| piny | Abounding with pines. Alternative forms: piney] "The piny wood." Source: Websters Dictionary (01 Mar 1998) |