A precipice or cliff: a very steep, often nearly vertical rock face with a large drop.
ハイキングコースの先に突然の絶壁が現れたので十分注意した。
A sudden cliff appeared ahead on the hiking trail, so we were very careful.
あの城は海に面した絶壁の上に建っている。
That castle is built on a cliff overlooking the sea.
絶壁から見る夕日は格別だ。
The sunset viewed from the cliff is exceptional.
(Rare) a steep formation or object with a flat top — i.e., a steep face with a flat head/top.
この岩山は頂上が平らで、まるで絶壁のような形をしている。
This rocky mountain has a flat summit and looks like a steep cliff.
地層の露頭は絶壁状に切り立っている箇所がある。
There are outcrops where the strata stand up as steep, cliff-like faces.