Acorns germinate and grow into oak trees, so the four-letter
word would be "oaks". There is a well-known saying that "mighty
oaks from little acorns grow".
Where are the acorns for the ice age 4 quest in Build-a-Bearville?
The 5 acorns for the Ice Age 4 quest are located:
1. Sunshine Shores - in the palm tree
2. Waterfall - in the tree
3. Waterfall Lake - next to the campfire
4. Farm - next to the tractor
5. Meadow - in a tree