This is the 184th most frequent Russian word.
министр
"Министр" translates to "minister," meaning a high-ranking government official in charge of a specific department.
Here, 'министра' is in the genitive singular case, showing possession or association.
Он занимается вопросами, которые интересуют министра финансов.
He deals with issues that interest the Minister of Finance.
In this instance, 'министром' is in the instrumental case, indicating the means or accompaniment in the context of the meeting.
Вчера у нас было собрание с министром.
Yesterday, we had a meeting with the Minister.
In this sentence, 'министр' refers to a governmental official in charge of a specific department.