1 definition by Bwian SilverDragon

Top Definition
To fiddle with,improve, mess about with, fix, adjust.
Fertle with an engine... tune it up?...
Fertle with anything... to adjust it
Can be "search for", ie, had a damn good fertle in the shed, but couldnt find the shovel...
by Bwian SilverDragon July 11, 2006
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