This is the 791st most frequent Russian word.
идти
"Идти" means "to go" or "to walk" (unidirectional).
The verb 'идти' is in past tense, describing the continuous action of walking at a specific past moment.
Когда я шёл домой, я встретил друга.
When I was walking home, I met a friend.
Here, 'идти' is used in its present tense to describe the act of walking to a destination in progress.
Я иду в магазин.
I am going to the store.
'Идти' is here used in the future tense, describing a planned action of walking.