1. a fictional or whimsical berry, often used in children's literature and fantasy contexts; a berry of uncertain or mixed identity
Usage: informal; chiefly literary or fantastical
2. a type of berry pie or dessert made with a mixture of berries, popular in some regional cuisines
Usage: regional; culinary

Examples

• The children's book featured a magical bumbleberry that granted wishes.
• In the enchanted forest, the bumbleberry grew only under moonlight.
• Grandmother's bumbleberry pie was a family favorite at every gathering.
• The bumbleberry jam had a unique flavor that combined several different fruits.
• The character searched the forest for the elusive bumbleberry to break the spell.