Complex sentence: Crookesbroom literally means'crooked lane amongst the broom (shrub)' (i.e. the plant, not the article for sweeping floors), the shape of the lane which passes through it attests to this etymology.
Split into simpler sentences: Crookesbroom literally means'crooked lane amongst the broom (shrub)' (referring to the plant, not the sweeping implement). The shape of the lane which passes through it attests to this etymology.