This is the 7814th most frequent Japanese word.
呑み
"呑み" (nomi) means "drinking" or "a drink."
In this sentence, '呑み' is part of the word '呑み込む', which metaphorically means absorbing or understanding information.
この本の内容を呑み込んで理解しました。
I gulped down the content of this book and understood it.
Here, '呑み' refers directly to the act of drinking, specifically alcoholic beverages.
友達と近くの酒場で呑みました。
I drank with friends at the nearby tavern.
In this sentence, '呑み込む' metaphorically represents digesting or processing information through hearing someone explain their story.