Bosk

Meantime, through well-known bosk and dell, / I'll lead where we may shelter well.

Source: wiktionary

[...] and so by town and thorpe, / And tilth, and blowing bosks of wilderness, / We gain'd the mother-city thick with towers, / And in the imperial palace found the king.

Source: wiktionary

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, bosks of fantastic pollards – dotted oaks of vast growth – here and there a weird hollow thorn-tree – patches of fern and gorse.

Source: wiktionary

On February 16 a reconnaissance in force was pushed to within a mile of the fort and battle offered on the open plain. The challenge was disregarded, and only noticed by the sending out of a few well-mounted men to watch our movements. The forces of the enemy were kept well concealed in the bosque (grove) above the fort and within its walls.

Source: wiktionary