Sentence:  The enclosure was indeed little beyond that of a good-sized paddock – its boundaries were visible on every side – but swelling uplands, covered with massy foliage sloped down to its wild irregular turf soil – soil poor for pasturage, but pleasant to the eye; with dell and dingle, <WSD>bosks</WSD> of fantastic pollards – dotted oaks of vast growth – here and there a weird hollow thorn-tree – patches of fern and gorse. 
Meaning of the word marked with <WSD> tags:  A thicket; a small wood.