Rocker
/rˈɑkər/
Listen pronunciation
Definition
(noun) A curved piece of wood attached to the bottom of a rocking chair or cradle that enables it to rock back and forth.
Sentence Examples
The whole world is off its rocker.
That guy is off his rocker!
CEFR Practice Quiz
The baby was soothed by the gentle motion of the ____ as her mother sang softly.