Stone age

//ˈstəʊn ˌeɪdʒ// name, slang

Definitions

Proper Noun
  1. 1
    A broad prehistoric period during which humans widely used stone for toolmaking.

    "Holonym: prehistory"

  2. 2
    Alternative letter-case form of Stone Age. alt-of

    "Were it not that folk-lore has almost died out, more than one domestic rite might be traced back to the stone age."

  3. 3
    Any extremely primitive or undeveloped era. figuratively, informal

    "If they attack our country, we'll bomb them back to the Stone Age!"

  4. 4
    The time a particular field was introduced and was in its earliest stages of development. figuratively

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