Crossword Genius

To put on head, secure large cushion (7)

Ross

I believe the answer is:

beanbag

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

'to put on head secure' is the wordplay.
'to put on' is a charade indicator (letters next to each other).
'head' becomes 'bean' (bean is a kind of head).
'secure' becomes 'bag' (bag can mean to secure).
'bean'+'bag' is 'BEANBAG'.

Can you help me to learn more?

(Other definitions for beanbag that I've seen before include "Large cushion filled with granules" , "Small cloth sack thrown in children's games" , "Simple seat" , "Granule filled sack for lounging on" , "Large cushion used as a seat" .)

I've seen this clue in The Times.
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