This is the 6723rd most frequent Japanese word.
パチンコ
"Pachinko" is a Japanese gambling game and slot machine hybrid using small steel balls.
In this sentence, "パチンコ" refers to the activity of playing pachinko, which is a type of gambling game popular in Japan.
昨日の昼まで友達とパチンコしていた。
I was playing pachinko with my friend until noon yesterday.
In this example, "パチンコ" is used to describe the balls that are part of the pachinko game.
彼は昔、パチンコの玉を集めるアルバイトをしていた。
He used to work part-time collecting pachinko balls.
Here, "パチンコ" denotes the establishments or parlors where one can play pachinko.