originalstructures

noun
UK /əˈrɪdʒ.ɪ.nəl ˈstrʌk.tʃəz/
US /əˈrɪdʒ.ə.nəl ˈstrʌk.tʃərz/

Original structures are buildings or parts of buildings that were made a long time ago and are still the same as when they were first built.

The old castle and its walls are original structures that people come to see.


OTHER MEANINGS

2. The first versions of something, before any changes were made.

The original structures of the story were very different from the final book.

3. The basic parts that hold something together.

Engineers studied the original structures of the bridge to make it stronger.

4. The way something is put together in its first form.

The original structures of the song were simple, just a voice and a guitar.