This is the 10073rd most frequent Japanese word.
連発
"連発" (れんぱつ) means "repeated occurrence" or "successive firing."
連発 (renpatsu) here indicates the action of repeatedly telling jokes in succession.
彼はジョークを連発してみんなを笑わせた。
He told jokes one after another, making everyone laugh.
連発 (renpatsu) in this context refers to the repeated occurrence of typhoons over a short period.
今年は台風が連発して、地域に被害を及ぼした。
This year, typhoons occurred repeatedly, causing damage to the region.
連発 (renpatsu) here describes the successive action of throwing strikes during pitching in baseball.