Sentence:  It seemed to Adam that he felt the blood in his toes creeping up his legs and body until it reached his brain where, finding it could go no farther, it <WSD>bubbled</WSD> him into dumbness: it added to his confusion to know that he looked as if some such accident had befallen his circulation. 
Meaning of the word marked with <WSD> tags:  To cause to feel as if bubbling or churning.