This is the 361st most frequent Russian word.
киеве
"Киеве" is the prepositional case of "Киев" (Kyiv), meaning "in Kyiv" (the capital of Ukraine).
The word 'Киеве' here is used as a locative form, indicating a place where the subject resides, in this case Kyiv.
Я живу в Киеве.
I live in Kyiv.
Here, 'Киеве' serves as a locative form denoting the location where the subject was present.
На прошлой неделе я был в Киеве.
Last week I was in Kyiv.
In this sentence, 'Киеве' again takes the locative form, indicating the place where the action of walking occurred.