Is a “wall-prop” a non-dancer at a ball?

Kipling uses the word that way in “A Friend’s Friend”, Plain Tales from the Hills, 1888. The fictional Kipling takes his guest Jevon to a ball, and Jevon gets hopelessly drunk, annoys everybody, and is embarrassing Kipling. Then Kipling goes on:

I set him [Jevon] in a quiet corner of the supper-room, and went to find a wall-prop that I could trust. There was a good and kindly Subaltern ― may Heaven bless that Subaltern, and make him a Commander-in-Chief! ― who heard of my trouble. He was not dancing himself, and he owned a head like five-year-old teak-baulks. He said that he would look after Jevon till the end of the ball.

The Kipling Society confirms that a wall-prop is a non-dancer who leans against a wall.

Now, I haven’t been able to find the word used that way anywhere else. So did Kipling coin it himself and it didn’t catch on, or was it used with that meaning somewhere?

Solution 1:

I would call them a "wallflower".

• wallflower (noun) - "a person who, because of shyness, unpopularity, or lack of a partner, remains at the side at a party or dance." MW

Edit - I've never seen or heard "wall-prop" used as a synonym for "wallflower".