This is the 9849th most frequent French word.
farcir
To stuff.
In this sentence, 'farcir' is used in its primary culinary meaning, referring to the act of stuffing food, often with a mixture of ingredients.
Je vais farcir ce poulet avec des légumes.
I am going to stuff this chicken with vegetables.
Here, 'farcir' is used metaphorically to imply that the book contains a large amount of errors, suggesting an abundance or excessive presence.
Le livre est farci d'erreurs.
The book is filled with errors.
In this usage, 'farcir' is figuratively applied to indicate adding numerous elements (details) to stories, enriching them.