To sniff something/someone in a sexual manner. Originally pertaining to bicycle saddles. Possibly of Australian origin.
Stop snidging the knickers on that clothes line! You are an awful snidger.
by eoinie May 31, 2007
Cute, sweet. Posh school-type slang from the 40's and before.
"Mice are so snidge."
by Petaluma April 11, 2013