This is the 10034th most frequent French word.
glissantes
Slippery.
Here, 'glissantes' is an adjective describing the characteristic of the streets due to the conditions caused by the rain, emphasizing their slippery nature.
Les rues étaient glissantes à cause de la pluie.
The streets were slippery because of the rain.
In this sentence, 'glissantes' modifies 'les feuilles' to express their physical property of being slippery, which impacts the safety of the mentioned path.
Les feuilles glissantes rendent le sentier dangereux.
The slippery leaves make the path dangerous.
The term 'glissantes' serves here as an adjective that conveys the caution needed due to the rocks' slippery texture, especially in the described location near the river.