Definition of "clanking"

My course happened to lead me to the river, and I saw a steamer lying there, and from the bustle on her decks and the clankings from her engine room, I concluded that she was making preparations for a start somewhere.

1861, E. J. Guerin, Mountain Charley, page 21

Smalling’s challenge was weak and, when Lucas buried his shot, the night air was filled with the clanking of thousands of red plastic seats being emptied.

2018 August 27, Daniel Taylor, “Lucas Moura double for Spurs deepens gloom at Manchester United”, in The Guardian (London)‎