出典:Wiktionary
Corruption of digest, influenced by dis- and chest in the mistaken belief that it refers to food moving from the chest to the intestine.
Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for disgest in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.)