Munch is the sound and the action of chewing something . You can picture munchies as whatever you munch: the small things you pick up with your fingers, eat standing up, and finish in one bite. Everything else about the word grows out of that little handful of crisps — including the feeling of wanting one.
可以想成：munch 就是「喀滋喀滋地咬」。munchies 就是拿來喀滋的那些小東西——洋芋片、堅果、小餅乾，用手抓著吃、不用盤子、也不算一頓飯。這個字的另一個用法，就是從這一把零食長出來的：那股「好想喀滋一下」的感覺，英文直接借同一個字來講。
From the word’s history
The packet's source derives munchies straightforwardly from munchie / munchy plus the plural -s, which keeps the word tied to the verb munch and to the thing that gets munched.
來源記到 munchies 是 munchie／munchy 加上複數的 -s 來的。這條線很單純，也剛好解釋了為什麼這個字天生是複數：它講的是一把一把、一口一口的小東西，不是一整份餐點。
Wiktionary, "munchies"
登入就可以看每一支怎麼連回核心畫面。