Place for a catnap (4)
(Other definitions for sofa that I've seen before include "Wide padded seat" , "Chesterfield, maybe" , "Area for sitting" , "Upholstered seat for more than one person" , "Settee" .)
(Other definitions for lap that I've seen before include "Knees" , "Scoop up with the tongue" , "Thighs, when seated" , "Single circuit of track" , "revolution" .)