Fetching details from the dictionary...

to pour (sake); to serve; to drink (together)
to consider (feelings, the situation, etc.); to sympathize with; to intuit; to understand
お客様にお酒を酌んで差し上げます。
I will pour you some sake.
友人と互いに酌み交わして楽しく飲んだ。
We enjoy pouring drinks for each other.
上司にお酒を酌むのが礼儀だ。
It is polite to pour sake for your boss.