This is the 7636th most frequent Russian word.
жегу
"Жегу" means "I burn" (first-person singular, present tense of the verb "жечь").
In this figurative usage, 'жегу' represents an intense feeling, indicating an emotion rather than a physical action.
Я жегу страстью, когда пишу.
I am burning with passion when I write.
In this sentence, 'жегу' is the first person singular form of the verb 'жечь' meaning 'to light' or 'to burn', indicating the action being performed by the speaker.
Я жегу костёр, чтобы согреться.
I am lighting a fire to keep warm.
Here, 'жегу' (as a variant of 'жёг') denotes his actions in a past habitual sense, which is part of storytelling.