This is the 12120th most frequent French word.
ur
"Ur" is not a standalone French word; it may be a typo or abbreviation.
'Sur' is employed as a preposition to denote physical or metaphorical reliance or support.
Il s'appuie sur moi lorsqu'il se sent mal.
He leans on me when he feels bad.
Here, 'sur' is used as a preposition indicating location where the horse is galloping.
Le cheval brun galopait sur la colline sous un ciel bleu.
The brown horse was galloping on the hill under a blue sky.
In this sentence, 'sur' acts as a preposition expressing the topic or subject being referred to.