IPA: //ˈpleɪˌfiːld//
KK: /ˈpleɪˌfiːld/
An area designed for playing games, especially sports or outdoor activities.
The children ran around on the playfield during recess.
Playfield → It is formed from "play" (from Old English *plegian*, meaning to engage in activity or amusement) and "field" (from Old English *feld*, meaning an open area of land). The word "playfield" refers to an open area designated for engaging in play or sports activities.
Think of an 'open area' ('field') where people 'engage in activity' ('play') — that's what a playfield is.