Crossword Genius

Sleeve sun’s heat, hard covering (6)

Ross

I believe the answer is:

sheath

I'm a little stuck... Click here to teach me more about this clue!

'sleeve' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps you can see an association between them that I don't see?

'sun's heat hard covering' is the wordplay.
'covering' says the answer is hidden in the clue.
'SHEATH' is hidden in the letters of 'suns heat hard'.

Can you help me to learn more?

(Other definitions for sheath that I've seen before include "coat" , "Protective cover" , "Cover protecting" , "(Blade's) cover" , "cocktail dress" .)

I've seen this clue in The Hindu.
Want a hint initially instead of a full solution? Install my app