This is the 13719th most frequent Spanish word.
rotarias
"Rotarias" means "rotary" or "revolving" in English, typically referring to something that rotates or is related to rotation.
In this sentence, "rotarias" is used as an adjective describing the wheels that have a rotary or spinning function.
Las ruedas rotarias giran lentamente.
The rotary wheels turn slowly.
Here, "rotarias" is used to describe the term reserving it to members affiliated with the Rotary club associated with charitable and community activities.
Este es el club de damas rotarias más antiguo de la ciudad.
This is the oldest Rotary ladies' club in the city.
In this usage, "rotarias" describes machines that operate with a rotary mechanism or design.