The most common and most likely answer to this crossword clue is the 7 letter word RHODIUM
R
H
O
D
I
U
M
Buddy explains!
The straight part
We know that "metal" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case metal = rhodium.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 RHODIUM mean?
RHODIUM noun- A rare, hard, silvery-white, inert metallic chemical element (symbol Rh) with an atomic number of 45.
- A single atom of this element.