This is the 8814th most frequent French word.
bouchon
"Traffic jam" or "cork/stopper."
In this context, 'bouchon' refers to a traffic jam, which is a common metaphorical usage in French when describing vehicle congestion.
Il y avait un bouchon sur l'autoroute ce matin.
There was a traffic jam on the highway this morning.
Here, 'bouchon' literally signifies a cap or a stopper used to close bottles, a very practical application of the word.
J'ai perdu le bouchon de ma bouteille d'eau.
I lost the cap of my water bottle.
In this sentence, 'bouchon' is used in a culinary context to denote a type of traditional restaurant specific to Lyon, France.