Wiktionary
n. 1 (context idiomatic English) A nose with a small size and a relatively flat, round shape, usually considered to be dainty or cute in appearance. 2 (context idiomatic English) A person having such a nose.
Wikipedia
is a 26-episode Japanese animated TV series that aired from 19 October 1985 to 26 April 1986. It was animated by Topcraft and it was the first TV series produced by Sanrio.
An English dub was produced by Saban in 1994.
Usage examples of "button nose".
He had a button nose, a mop of unruly hair and dark circles under his eyes.
It lacked even the button nose of a baby, nor were there evident external ears.
He was a strangely flat-faced man with a button nose and pale cold eyes.
The man was tall, slender, with long legs and arms, a long sallow head quite bald, round eyes, a small button nose, minute ears.
She had a button nose and a hard little set-back chin, a gripping jaw set on its course even though the angels of God argued against it.
The blunt head under his hand swung around, black button nose pointed north.
As it was, Thaddeus Araman found himself staring over his desk at a mild-mannered individual, whose faded blue eyes looked at him wistfully from either side of a low-bridged button nose.