estaban parpadeando
-they/you were blinking
Imperfect progressive ellos/ellas/ustedes conjugation of parpadear.

parpadear

INTRANSITIVE VERB
(to bat one's eyelashes)-to blink
Synonyms for parpadear
INTRANSITIVE VERB
(to scintillate)-to twinkle
Synonyms for parpadear
Word of the Day
to stay up late