Also touan. Native name in Australia for the Flying Squirrel or Flying Phalanger (genus Belideus).

1

1846.  G. H. Haydon, Five Y. Exper. Australia Felix, iii. 57. The flying squirrel, or tuan, is much sought after for its fine fur.

2

1859.  H. Kingsley, G. Hamlyn, xxxi. The Touan, the little grey flying squirrel, only begins to fly about at night.

3