mar·ble 
/ˈmɑɚbəl/ noun
plural mar·bles /ˈmɑɚbəl/ noun 1 [noncount] : a kind of stone that is often polished and used in buildings and statues
▪ The statue is made of marble. ▪ a block of marble — often used before another noun ▪ the museum's polished marble floor/staircase ▪ a marble countertop 2 a [count] : a little glass ball used in some children's games
▪ I love to play with marbles.
b marbles [noncount] : a children's game played with little glass balls
▪ Let's play marbles. = Let's play a game of marbles.
▪ The statue is made of marble. ▪ a block of marble — often used before another noun ▪ the museum's polished marble floor/staircase ▪ a marble countertop
▪ I love to play with marbles.
b marbles [noncount] : a children's game played with little glass balls
▪ Let's play marbles. = Let's play a game of marbles.
lose your marbles
informal + humorous : to become insane
▪ When he started ranting about how the government was out to get him, I thought he'd lost his marbles. [=gone crazy] ▪ He hasn't completely lost his marbles yet.
▪ When he started ranting about how the government was out to get him, I thought he'd lost his marbles. [=gone crazy] ▪ He hasn't completely lost his marbles yet.
