The most common and most likely answer to this crossword clue is the 6 letter word DOCTOR
I've seen this crossword clue in Independent
D
O
C
T
O
R
More clues leading to the result DOCTOR
- Tamper with fish served up to king
- Interfere with / GP
- Tamper with retro piece of religious iconography outside court
- Who, for example, inverted degenerate set of principles endlessly?
- Cook bones?
- Health expert let fish go bad after flipping
- Who’s this first on TV? No, in Bond film
- Old brown sherry will corrupt fish, on reflection
- Modify entrance to allow court admission
- Pervert caught during exit
Buddy explains!

The straight part
We know that "Cook/bones" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cook/bones = doctor.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 DOCTOR mean?
DOCTOR noun- A physician; a member of the medical profession; one who is trained and licensed to heal the sick or injured. The final examination and qualification may award a doctor degree in which case the post-nominal letters are D.O., DPM, M.D., DMD, DDS, in the US or MBBS in the UK.
- A person who has attained a doctorate, such as a Ph.D. or Th.D. or one of many other terminal degrees conferred by a college or university.
- A veterinarian; a medical practitioner who treats non-human animals.
- A nickname for a person who has special knowledge or talents to manipulate or arrange transactions.
- A teacher; one skilled in a profession or a branch of knowledge; a learned man.
- Any mechanical contrivance intended to remedy a difficulty or serve some purpose in an exigency.
- A fish, the friar skate.
- To act as a medical doctor to.
- To act as a medical doctor.
- To make (someone) into an (academic) doctor; to confer a doctorate upon.
- To physically alter (medically or surgically) a living being in order to change growth or behavior.
- To genetically alter an extant species.
- To alter or make obscure, as with the intention to deceive, especially a document.
- To take medicine.