marbles

Marbles is a class of children's games played with glass, clay, or agate balls usually about ½ inch (1.25 cm) across. However, they may range from less than ¼ inch (0.635 cm) to over 3 inches (7.75 cm), while some art glass marbles for display purposes are over 12 inches (30 cm) wide. Marbles are often  collected, both for nostalgia and for their aesthetic appeal.
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<jargon> (From the mainstream "lost his marbles") The minimum needed to build your way further up some hierarchy of tools or abstractions. After a bad system crash, you need to determine if the machine has enough marbles to come up on its own, or enough marbles to allow a rebuild from backups, or if you need to rebuild from scratch. "This compiler doesn't even have enough marbles to compile hello, world."
[Jargon File]
(1998-05-21)

Noun
1. a children's game played with little balls made of a hard substance (as glass)
(hypernym) child's game
2. the basic human power of intelligent thought and perception; "he used his wits to get ahead"; "I was scared out of my wits"; "he still had all his marbles and was in full possession of a lively mind"
(synonym) wits
(hypernym) intelligence

Noun
1. a hard crystalline metamorphic rock that takes a high polish; used for sculpture and as building material
(hypernym) rock, stone
(hyponym) verd antique, verde antique
2. a small ball of glass that is used in various games
(hypernym) ball
(hyponym) taw, shooter
3. a sculpture carved from marble
(hypernym) sculpture
Verb
1. paint or stain like marble; "marble paper"
(hypernym) stain
(classification) handicraft

A very hard, stinging ball with the tactile and ballistic characeristics of a small rock. Used to describe cheap volleyballs (frequently bearing the hilariously inaccurate promise of being "non-sting" or "soft touch").