__ combustion engine; invented by Étienne Lenoir

The first hint to crack the puzzle «__ combustion engine; invented by Étienne Lenoir» is:

It is a word which contains 8 letters

The second hint to crack the puzzle «__ combustion engine; invented by Étienne Lenoir» is:

It starts with letter I

I

The third hint to crack the puzzle «__ combustion engine; invented by Étienne Lenoir» is:

It ends with letter L

I l

Looking for extra hints for the puzzle «__ combustion engine; invented by Étienne Lenoir»:

Click on any empty tile to reveal a letter

I n t e r n a l

The answer for the puzzle «__ combustion engine; invented by Étienne Lenoir» is:

I n t e r n a l

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Puzzle 3

Insulted, anagram of delights

Old furniture and other old items with value

Nationality of author Margaret Atwood

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Impose on someone's generosity

Collectible stones masquerading as companions

Restoration to initial state

Rigid airship with German name

The ninth plague of Egypt

Involuntary expelling of air/mucus from the nose

Joaquin Phoenix's character in Gladiator

Melodic container for jewellery

A follower of Jerry Garcia's band

Beating of wings

Vitality, enthusiasm, liveliness

Kickboxing foot strike not from the front