Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun sandbox

2 senses of sandbox

Sense 1
sandbox -- (mold consisting of a box with sand shaped to mold metal)
       => mold, mould, cast -- (container into which liquid is poured to create a given shape when it hardens)

Sense 2
sandbox, sandpile, sandpit -- (a plaything consisting of a pile of sand or a box filled with sand for children to play in)
       => plaything, toy -- (an artifact designed to be played with)