Big as a biscuit, deep as a cup, but even a river can’t fill it up. What is it?

Answer: strainer

More Difficult Riddles with answers

More Difficult Riddles

Blend a teapot shot so the pearlies won’t rot!
Bold are the first; true are the second; playful are the third; clever are the fourth; forceful are the fifth.
Both old people and owls are said to be possessing this trait
Both punishment and sweet reward, It will befall both fool and lord. It is a spiritual scoreboard, Your every deed it does record.
Break it and it is better, immediately set and harder to break again
Brown I am and much admired; many horses have I tried; tire a horse and worry a man; tell me this riddle if you can.
Bury deep, Pile on stones, My mind will always Dig up them bones
By Moon or by Sun, I shall be found. Yet I am undone, if there's no light around
By the way, what never moves, wears shoes, sandals and boots, but has no feet?
Can you combine plus signs and five 2's to get 28? Can you combine plus signs and eight 8's to get 1,000?
Can you divide the watch face with 2 straight lines so that the sums of the sums of the numbers in each part are equal?
Can you write down eight eights so that they add up to one thousand?