Answer: limerick

AnswerCrossword Clue
LIMERICKA lace of Irish origin
limericka humorous verse
limerickA humorous, frequently bawdy, verse of three long and two short lines rhyming aabba, popularized by Edward Lear
LIMERICKEponymous Irish city
LIMERICKWriting that's often obscene
LIMERICKLear's 5-liner
LIMERICKVerse often beginning "There once was a ..."
LIMERICKOften-bawdy verse
LIMERICKEdward Lear specialty
LIMERICKLear creation
LIMERICKVerse form named after a county
LIMERICKVerse named for Irish town
LIMERICKVerse form.
LIMERICKType of poem.
LIMERICKType of jingle.
LIMERICKSeaport on the Shannon.
LIMERICKNonsense verse.
LIMERICKFive-liner
LIMERICKIt often starts "There once was a..."
LIMERICKPoem with a punch line
LIMERICKPoem with the rhyme scheme aabba
LIMERICKFive-line verse