Is that something like breakfast, lunch, and dinner? Rin thought Shuushoku is similar to Choushoku (breakfast), Chuushoku (lunch) and Yuushoku (dinner)

You're right.

Support my employment interview! employment = shuushoku 就職

Eating before finding employment... It's "Eatployment"! 就食= read as Shuushoku, but different kanji

If you sleep right after your meal, you'll get fat.

Okay, okay. Can we just go now?

Come on, let's get down to the business.