This is the 614th most frequent Japanese word.
飲む
To drink.
In this sentence, '飲む' (nomu) refers to the act of consuming a beverage, specifically coffee in this example.
私は毎朝コーヒーを飲みます。
I drink coffee every morning.
Here, '飲む' is used metaphorically to mean 'to take' when referring to consuming medicine.
薬を飲まないといけません。
I need to take medicine.
In this context, '飲む' is part of the compound verb '飲み込む', which means 'to swallow' or 'to comprehend' figuratively, showing understanding.