As a verb underdrove
As a noun undergrove is
(poetic) a grove of shrubs or low trees under taller ones.
Designed to turn at a slower speed than stock.
To slow the rate of rotation in (a pulley-based system).
(poetic) A grove of shrubs or low trees under taller ones.
- I sat within an undergrove
Of tallest hollies, tall and green;
A fairer bower was never seen. — Wordsworth.