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Phonetics
/ˈt͡ʃɔɹtəl/
noun
A joyful, somewhat muffled laugh, rather like a snorting chuckle.
Example: He frequently interrupted himself with chortles while he told us his favorite joke.A similar sounding vocalisation of various birds.
verb
To laugh with a chortle or chortles.
Example: The old fellow chortled as he recalled his youthful adventures.