Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.

Answer: book

More Difficult Riddles with answers

More Difficult Riddles

Thousands lay up gold within this house, But no man made it. Spears past counting guard this house, But no man wards it.
Thousands of these come together to make a digital image. What is it?
Three little letters, a paradox to some. The worse that it is, the better it becomes.
Through its wounds, water does run. It once held many but now has none. What is it?
Tom volunteered to be the chief organizer for the world's tether ball championships. There were 657 contestants from around the world. The tournament was set up whereby the winner would advance and the loser would be eliminated. Since there was an odd number of participants, the initial pairing leaves one player out. That player gets a bye and automatically advances to the next round. How many matches will Tom have to schedule to determine the tether ball champion?
Try deciphering this code - S T O E E I T A E S S S I N O Y (Hint - count and you will have the answer!)
Turn us on our backs and open up our stomachs you will be the wisest of men though at start a lummox.
Twelve flags stand equidistant along the track at the stadium. The runners start at the first flag. A runner reaches the eighth flag 8 seconds after he starts. If he runs at an even speed, how many seconds does he need altogether to reach the twelfth flag?
Twigs and spheres and poles and plates. Join and bind to reason make.
Two cyclists began a training run, one starting from Moscow and the other starting from Simferopol. When the riders were 180 miles apart, a fly took an interest. Starting on one cyclists shoulder, the fly flew ahead to meet the other cyclist. After reaching him the fly then turned around and yet back. The restless fly continued to shuttleback and fourth until the pair met; then settled on the nose of one rider. The flys speed was 30 mph. Each cyclist speed was 15 mph. How many miles did the fly travel?
Two men walk into a restaurant. One man orders H2O. The second man says, “I will have H2O too.” The second man dies. How come the second man dies?
Two people are born at the same moment, but they don't have the same birthdays. How could this be?