The most common and most likely answer to this crossword clue is the 5 letter word RHOMB
I've seen this crossword clue in Independent
R
H
O
M
B
More clues leading to the result RHOMB
- Shape character of Greek doctor
- Angular figure in dapper Homburg
- Lozenge recipe at hospital used by old doctor
- Figure house doctor should support Republican
- Doctor behind huge beast dropping in lozenge
- Greek character, doctor, in shape
- Form of mantra sung in Red, Hot and Blue
- Physicist about to introduce minute lozenge
- Lozenge initially recommended by house doctor
- Doctor carries foreign character’s lozenge
Buddy explains!

The straight part
We know that "Lozenge" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case lozenge = rhomb.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 RHOMB mean?
RHOMB noun- A rhombus.
- A rhombohedron.