Answer: EIEIO
The answer EIEIO has 163 possible clues. See the results below.
Possible Clues:
- Three-note quintet
- Letters associated with animal sounds
- Kids' song refrain that's all vowels
- All-vowel refrain from a kids' song
- Not long ago at all: Abbr
- Children's song refrain found at the starts of 17-, 26-, 35-, 50- and 57-Across
- 'Old MacDonald Had a Farm' refrain
- '... had a farm, __'
- Trailer for farm animals?
- 'Old MacDonald' refrain, and a feature of the five longest Across answers