antiknock

[adj] - (of gasoline) containing tetraethyl lead 2. [n] - any of various compounds that are added to gasoline to reduce engine knocking
Found on http://www.webdictionary.co.uk/definition.php?query=antiknock

antiknock

adjective (of gasoline) containing tetraethyl lead; `antiknock gasoline`
Found on https://www.encyclo.co.uk/local/20974
No exact match found