Tunnel: alternatives and connections

A cave, grotto, or subterraneous place of large extent used for the burial of the dead; -- commonly in the plural.

Open English WordNet identifies the related term as a narrower or more specific lexical category.

An underground way or gallery; especially, a passage under a street, in which water mains, gas mains, telegraph wires, etc., are conducted.

Open English WordNet identifies the related term as a narrower or more specific lexical category.

A place privileged, by prescription or grant the king, for keeping certain animals (as hares, conies, partridges, pheasants, etc.) called beasts and…

Open English WordNet identifies the related term as a narrower or more specific lexical category.

To dig; to open (the ground) as with a spade.

Open English WordNet identifies the related term as a broader lexical category for at least one sense.

To turn up, or delve in, (earth) with a spade or a hoe; to open, loosen, or break up (the soil) with a spade, or other sharp instrument; to pierce, o…

Open English WordNet identifies the related term as a broader lexical category for at least one sense.

Whole.

Open English WordNet identifies the related term as a broader lexical category for at least one sense.

Having an empty space or cavity, natural or artificial, within a solid substance; not solid; excavated in the interior; as, a hollow tree; a hollow s…

Open English WordNet identifies the related term as a broader lexical category for at least one sense.

A way for passage; a hall. See Passage, 5.

Open English WordNet identifies the related term as a broader lexical category for at least one sense.

To enter into; to make way into the interior of; to effect an entrance into; to pierce; as, light penetrates darkness.

Open English WordNet identifies the related term as a broader lexical category for at least one sense.

To bore through; to pierce through with a pointed instrument; to make a hole or holes through by boring or piercing; to pierce or penetrate the surfa…

Open English WordNet identifies the related term as a broader lexical category for at least one sense.

The slender, smooth stem of an arrow; hence, an arrow.

Open English WordNet identifies the related term as a member, substance or component part.

An incorporated town. See 1st Borough.

Open English WordNet places these words in at least one shared synset. They share a lexicalised sense, but context, register and collocation should still be checked before substitution.