Crossword Genius

Water-resistant machine part (3)

Ross

I believe the answer is:

mac

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

This clue might be a double definition.

'water-resistant machine' is the first definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps you can see a link between them that I don't see?

'part' is the second definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?

Can you help me to learn more?

(Other definitions for mac that I've seen before include "Overcoat" , "Waterproof coat (colloq.)" , "laptop?" , "It may help you keep dry" , "Raincoat (colloq.)" .)

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