chortle
verb
[ ˈtʃɔːt(ə)l ]
• laugh in a noisy, gleeful way.
• "he chortled at his own execrable pun"
chortle
noun
• a noisy, gleeful laugh.
• "Thomas gave a chortle"
Origin:
1871: coined by Lewis Carroll in Through the Looking Glass ; probably a blend of chuckle and snort.