Related Clues:

• Too complex to solve
• Tangled or tied fast
• Gnarled, knobbed
• Tree trunk with hard masses - it's problematic
• The sound of the tide
• Gnarled, as a tree trunk
• Keep limb bony - OK in contest?
• Wood is often hard
• Kent keeper and Yorkshire opener, like my problem
• Gnarled, like a granny!
• Difficult piece of work? Not typically
• Difficult (point)
• Difficult - intricate
• Difficult - having hard lumps (of wood)
• Covered with small bumps (as knees)