The story
Etymology from Wiktionary, CC BY-SA 4.0.
Baoding ball
Today it means: A metal ball held and rotated within the hand to improve manual strength or dexterity or to relax the hand. Full definition →
Today it means: A metal ball held and rotated within the hand to improve manual strength or dexterity or to relax the hand. Full definition →
Etymology from Wiktionary, CC BY-SA 4.0.