The most common and most likely answer to this crossword clue is the 5 letter word CLAIM
I've seen this crossword clue in The Daily Telegraph
C
L
A
I
M
More clues leading to the result CLAIM
- Profess intention to oust idiot from class
- 150 train for profession
- Demand one eats shellfish? Just the opposite
- Illegal prospector who risks landing in kangaroo court?
- Shout when ex leaves demand for money?
- Put in for wayward Michael when he’s not there
- Ask for single shellfish to be brought round
- A hundred and fifty object to demand
- Silent type holding one piece of land to be mined
- Hold large object under cape
Buddy explains!

The straight part
We know that "Demand" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case demand = claim.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CLAIM mean?
CLAIM noun- A demand of ownership made for something.
- The thing claimed.
- The right or ground of demanding.
- A new statement of something one believes to be the truth, usually when the statement has yet to be verified or without valid evidence provided.
- A demand of ownership for previously unowned land.
- A legal demand for compensation or damages.
- To demand ownership of.
- To state a new fact, typically without providing evidence to prove it is true.
- To demand ownership or right to use for land.
- To demand compensation or damages through the courts.
- To be entitled to anything; to deduce a right or title; to have a claim.
- To cause the loss of, usually by violent means.
- To proclaim.
- To call or name.