slip over

slip something over someone or something

to cause something to slide or glide over and onto someone or something. Mother slipped the covers over Timmy and kissed him good night. Jane slipped the cover over the birdcage for the night.
See also: over, slip
References in classic literature ?
And Dickon helped him, and the Magic--or whatever it was--so gave him strength that when the sun did slip over the edge and end the strange lovely afternoon for them there he actually stood on his two feet--laughing.