毬
furball
On-Yomi: キュウ
Koohii stories:
1) [Megaqwerty] 21-6-2007(31): I requested that the cat do something and he spit up a furball.
2) [Katsuo] 14-5-2008(17): For her birthday, your pampered girlfriend's request is, "Something made of fur". So you get the cat to cough her up a furball.
3) [sboegema] 5-1-2010(7): 毛球 = fur・ball 毬 【いが; かさ】burr; (chestnut) case; (pine) cone.
4) [mantixen] 15-2-2007(2): The king was covered in fur as the ball he requested was actually a furball.
5) [sirkne] 1-1-2013(1): The kids were using a furball as a playball. I requested that they get a real ball instead, but somehow it was more fun this way. Dictionary says スポーツや遊びに用いる球。 ゴム・皮・布などで作り,よく弾む。 ボール。 「―つき」 / "ball used in sports or play. a bouncy ball made of rubber, hide, cloth, etc.") Part of 毬藻 (まり・も, algae), which if you went to Hokkaido you'd remember from まりもっこり.