singsong

Short definition from Wiktionary

Noun

1. 1
   A piece of verse with a simple, songlike rhythm.
2. 2
   An informal gathering at which songs are sung; a singing session.
3. 3
   Low-quality singing or poetry.
4. 4
   A drawling or monotonous tone, as of a poorly executed song.

Adjective

1. 1
   Of or relating to a piece of singsong; simple and melodic, varying in pitch.

Verb

1. 1
   To utter in a singsong voice.
2. 2
   To compose poor poetry.