This is the 6400th most frequent French word.
guillain
The word "guillain" does not have a definition in standard French; it might be a proper noun or a misspelling.
Here, 'Guillain' is used as a proper noun, referring to a person's name, specifically a doctor.
Le docteur Guillain a développé des techniques médicales innovantes.
Dr. Guillain developed innovative medical techniques.
In this sentence, 'Guillain' is part of the compound noun 'Guillain-Barré,' which names a specific medical syndrome.
Le syndrome de Guillain-Barré est une maladie neurologique.
The Guillain-Barré syndrome is a neurological disorder.
In this case, 'Guillain' refers again as a proper noun to an individual, emphasizing their contributions or work.