wall-nut

For example, if a zombie gets a hold of a wall-nut, he munches on the wall-nut's head, but it's kind of funny and cute NOT blood or gore.

Blisstree 2009

Who wouldn't enjoy a game in which a pole vaulting zombie jumps over a wall-nut only to splatter satisfyingly in your exploding potato minefield?

Tobold's MMORPG Blog 2009

Forest-trees) I shall need add little; after I have recommended the earliest removals, not only of all the sturdy sort in our woods, but even of some less tender trees in our orchards; pears, apples, vulgar cherries, &c. whilst we favour the delicate and tender murals, and such as are pithy; as the wall-nut, and some others.

Sylva, Vol. 1 (of 2) Or A Discourse of Forest Trees John Evelyn 1663

And here mentioning shade and dripping, though I cannot properly speak of them as infirmities of trees, they are certainly the causes of their unthriving till remov’d; such as that of the oak and mast-holme, wall-nut, pine and fir, &c. the thickness of the leaves intercepting the sun and rain; whilst that of other trees good, as the elm, and several other.

Sylva, Vol. 1 (of 2) Or A Discourse of Forest Trees John Evelyn 1663

They have a way to black and polish it, so as to render it like ebony, and with a mixture of soot and urine, imitate the wall-nut; but as the colour does not last, so nor does the wood it self (for I can hardly call it timber) soon after the worm has seiz’d it, unless one spunge and imbibe it well with the oyl of spike, where they have made holes.

Sylva, Vol. 1 (of 2) Or A Discourse of Forest Trees John Evelyn 1663