IPA: /ˈrɪŋləs/
KK: /ˈrɪŋləs/
Not having a ring or rings.
The ringless tree stood tall in the forest, its smooth trunk a sign of its youth.
Ringless → It is formed from "ring" (from Old English "hring", meaning a circular band) and "-less" (meaning without). The word "ringless" means without a ring or lacking a circular band.
Think of a circular band ('ring') and remember that 'ringless' means lacking that circular band.