Five clues point to a shared feature. Try the hints first, then reveal the category and the connection for each clue.
This is an earlier Pinpoint puzzle. Latest Pinpoint Answer: #927 (Nov 13)
The clues
Reveal one clue at a time and try to guess the category.
Reveal Clue #1Clue #1
Books
Reveal Clue #2Clue #2
Cacti
Reveal Clue #3Clue #3
Sea urchins
Reveal Clue #4Clue #4
Vertebrates (by definition)
Reveal Clue #5Clue #5
Porcupines (they're sharp!)
Give me a hint
Still stuck after the clues? Each hint narrows the category a little more.
Reveal Hint #1Hint #1
Look for a physical feature shared by an object and several living things.
Reveal Hint #2Hint #2
A book has this along the edge where its pages are bound.
Reveal Hint #3Hint #3
The same word can describe a backbone or a sharp protective projection.
Ready for the category?
The complete solution stays hidden until you choose to reveal it.
Reveal the CategoryHide Category
Pinpoint #914 Answer
CategoryThings with spines
Clues: Books, Cacti, Sea urchins, Vertebrates (by definition), Porcupines (they're sharp!). Category: Things with spines.
How to Solve Pinpoint #914
The Pinpoint #914 answer is Things with spines.
- Books: the spine is the bound edge that holds the pages together.
- Cacti: their sharp protective structures are called spines.
- Sea urchins: these marine animals have a covering of spines.
- Vertebrates (by definition): the clue points to their backbone, or spinal column.
- Porcupines (they’re sharp!): their protective quills are spines.
The first clue may suggest reading or publishing, but cacti move the search toward a shared physical feature. Sea urchins reinforce the sharp-projection meaning. Vertebrates introduce the backbone meaning, and porcupines confirm the protective-spine meaning. The category works across these different senses of the same word.
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