Enter a clue or pattern or both:
The Clue
Bone marrow (7 letter answer)
The Answer
MEDULLA
Tags
Notes
The answer MEDULLA is so rare that it appears less than once every 2500 puzzles.
Definition
MEDULLA as a noun:
1. (myelin, myeline, medulla) = a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers
2. (medulla oblongata, medulla, bulb) = lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata); "the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning"
3. the inner part of an organ or structure in plant or animal