What does lithe mean in the below context?

The lithe gymnast moved gracefully across the stage, captivating the audience with her fluid and elegant movements.

Question

What does lithe mean in the below context?

The lithe gymnast moved gracefully across the stage, captivating the audience with her fluid and elegant movements.

Answer

I've never heard this word before. If you say it to a random native speaker, it's very unlikely they'll know it either. Seems to be mostly used in certain industries like gymnastics and horticulture.