источи́ть

rare #48906

verbperfective imperfective is точи́ть

1.
to eat away, to gnaw full of holes, to riddle with holes
Жучки источи́ли ста́рую ме́бель.
Woodworms have riddled the old furniture with holes.
Usually of insects, worms or rust destroying wood, metal or fabric.
2.
to grind down, to wear away by sharpening
Он источи́л нож почти до самой ру́чки.
He ground the knife down almost to the handle.
Of a blade worn away by repeated sharpening.
3.
(rare) to exude, to emit, to give off, to radiate
Цветы́ источи́ли сла́дкий арома́т.
The flowers gave off a sweet fragrance.
Literary; of light, warmth or fragrance.

Examples

Жуки источили деревянный забор за несколько лет.
Over the course of several years, beetles bored through the wooden fence.
Время источило камень маленькими трещинами и дырами.
Over time, the stone was worn away into small cracks and holes.
Червь источил старую деревянную балку насквозь.
The worm had bored right through the old wooden beam.

Note: Stress change.

Imperative
ты	источи́
вы	источи́те

Active present	-
Active past	источи́вший	having bored through, having eaten away, having corroded, having worn out
Passive present	-
Passive past	источённый	worm-eaten, moth-eaten, corroded, eroded
Gerund present	-
Gerund past	источив источивши	while doing (past)

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