A boss without a place to feed (6)

I believe the answer is:

manger

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'a boss' is the 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?

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for manger that I've seen before include "Long trough" , "Food trough for animals" , "Fixture in stable" , "part of Nativity scene" , "Trough for cattle-feed" .)

I've seen this clue in The Globe and Mail.

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