estaban zumbando
-they/you were buzzing
Imperfect progressive ellos/ellas/ustedes conjugation of zumbar.

zumbar

Las enfermeras estaban zumbando alrededor y le pregunté cómo fue.
The nurses were buzzing around and I asked how it went.
Por eso me estaban zumbando los oídos.
Oh, so that's why my ears were burning.
Word of the Day
Christmas carol