insides

/IH0 N S AY1 D Z/
noun
  1. 1

    The interior or inner part.

    โ€œThe inside of the building has been extensively restored.โ€

  2. 2

    The left-hand side of a road if one drives on the left, or right-hand side if one drives on the right.

    โ€œOn a motorway, you should never pass another vehicle on the inside.โ€

  3. 3

    The side of a curved road, racetrack etc. that has the shorter arc length; the side of a racetrack nearer the interior of the course or some other point of reference.

    โ€œThe car in front drifted wide on the bend, so I darted up the inside to take the lead.โ€

  4. 4

    (in the plural) The interior organs of the body, especially the guts.

    โ€œEating that stuff will damage your insides.โ€

  5. 5

    A passenger within a coach or carriage, as distinguished from one upon the outside.

noun
  1. 1

    Guts, intestines, innards

Source: https://en.wiktionary.org/wiki/inside, https://en.wiktionary.org/wiki/insides