This is the 6120th most frequent Turkish word.
yudum
Sip.
Here, 'yudum' is used as a noun to indicate a small amount of a liquid that is consumed in one go.
Bir fincan çaydan bir yudum aldım.
I took a sip from a cup of tea.
In this instance, 'yudum' is part of the phrase denoting the act of consuming something liquid in one go.
Elimdeki kahveyi beynimle bir yudumda içtim.
I drank the coffee in my hand in one gulp.
Here, 'yudumlamak' is the verb form derived from 'yudum', meaning to sip.