feed on
US /fiːd ɑːn/
UK /fiːd ɑːn/
1.
to eat something as food
:
•
Many birds feed on insects.
•
The caterpillars feed on the leaves of the plant.
2.
to grow stronger or be encouraged by something
:
•
His anger seemed to feed on her silence.
•
The rumors continued to feed on public anxiety.