This is the 14571st most frequent Russian word.
пел
"Пел" means "sang" (past tense, masculine, singular).
Here 'пел' is used as the past tense of the verb 'петь', meaning 'to sing', to describe an action someone performed in the past.
Он пел нам свою любимую песню.
He sang his favorite song to us.
'Пели' is the plural form in the past tense of the verb 'петь', indicating a group of people engaged in singing.
Вчера в караоке баре все пели их любимые мелодии.
Yesterday, everyone sang their favorite melodies in the karaoke bar.
'Пела' is the feminine singular past tense form of 'петь', conveying a repetitive action in the past related to singing.