From Longman Dictionary of Contemporary Englishldoce_307_bslitherslith‧er /ˈslɪðə $ -ər/ verb [intransitive always + adverb/preposition] 
SLIDEto slide somewhere over a surface, twisting or moving from side to side A snake slithered across the grass. He slithered down the muddy bank.→ See Verb table
SLIDEto slide somewhere over a surface, twisting or moving from side to side A snake slithered across the grass. He slithered down the muddy bank.→ See Verb tableExamples from the Corpus
slither• Bath could not hit their top gear of late as they too slithered around in the wet.• The snake slithered away through the grass.• Tom slithered down the muddy bank into the water.• He let it slither down the roof to the building's guttering.• For he was not a man who could slither into any shape required of him.• The air is filled with a dingo's howl, the footpaths alive with the poisonous snakes on their slithering nocturnal hunt.• As Katie fell asleep her book fell from her hands and slithered off the bed.• A wet pair of panty hose slithered over his ear.• They did so simply by reading the fine print and slithering through the loophole that yawned, obvious and inviting, therein.• After four or five testers had slithered through this interface maze, the correct solution would usually emerge.Origin slither Old English slidrian, from slidan; → SLIDE1 