This is the 2715th most frequent Russian word.
владимиром
The word "владимиром" is the instrumental case of the male name "Владимир," meaning "by/with Vladimir" in English.
The phrase 'с Владимиром' uses the instrumental case to indicate the person with whom the action is performed.
Я поговорил с Владимиром вчера.
I talked with Vladimir yesterday.
Here, 'с Владимиром' again employs the instrumental case to denote accompaniment in the action described.
Мы пошли на встречу с Владимиром.
We went to the meeting with Vladimir.
In this sentence, 'С Владимиром' indicates an association or partnership in the context of work, utilizing the instrumental case.