red heart

1 of 2

noun (1)

: incipient decay in lumber indicated by a dark red discoloration not found in sound wood

specifically : red rot sense 2b

redheart

2 of 2

noun (2)

: a California straggling shrub or small tree (Ceanothus spinosus) having dark red wood and blue-gray to white flowers and being used as an ornamental

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now