Webster's Revised Unabridged Dictionary · 1913

Impearl

Impearl , transitive verb

[Prefix im- in + pearl: compare French emperler.]

1.
To form into pearls, or into that which resembles pearls. [Poetic]
Dewdrops which the sun Impearls on every leaf and every flower. — Milton
2.
To decorate as with pearls or with anything resembling pearls. [Poetic]
With morning dews impearled. — Mrs. Browning
The dews of the morning impearl every thorn. — R. Digby