IPA: /ˈtiːtərbɔːrd/
KK: /ˈtiːtərbɔrd/
A board that is balanced on a support, where one end goes up when someone jumps on the other end, often used in acrobatics or as a playground equipment.
The acrobat performed a stunning flip after being launched from the teeterboard.
Teeterboard is formed from "teeter" (from Middle English *titeren*, meaning to sway or wobble) and "board" (from Old English *bord*, meaning a flat piece of wood). The word describes a flat board that sways or wobbles, typically used in acrobatics or gymnastics.
Imagine a flat piece of wood ('board') that 'wobbles' ('teeter') when someone stands on it — that's what a teeterboard is.