名詞 cave:

1. a geological formation consisting of an underground enclosure with access from the surface of the ground or from the sea

動詞 cave:

1. hollow out as if making a cave or opening
   同義詞：undermine
2. explore natural caves
   同義詞：spelunk

1. We kindled a firebrand in the cave.
   我們在山洞里點燃火把。
2. This cave was used by smugglersin the eighteenth century.
   這個洞穴是十八世紀走私的人使用的。
3. The boys huddled together in the cave to keep warm.
   男孩子們在山洞里擠成一團取暖。
4. He was caved in to our demand.
   他屈從了我們的要求。
5. The cliffs are riddled with caves.
   巖壁上布滿洞穴。
6. The roof of the old house caved in.
   那棟舊房子的屋頂塌下了。

cave

n.（名詞）
A hollow or natural passage under or into the earth with an opening to the surface.
洞：向地表開有出口的地下的或通向地內(nèi)的中空或天然的通道
v.（動詞）
caved,cav.ing,caves
v.tr.（及物動詞）
To dig or hollow out.
挖洞，挖空
To cause to collapse or yield.
使倒塌，使屈服
To crumple or smash:
擊潰，擊碎：
例句：
The top of the car was caved in by the impact.
汽車的頂篷被重擊壓得凹陷

v.intr.（不及物動詞）
To fall in; collapse:
陷下；塌倒：
例句：
The walls caved in during the earthquake.
墻壁在地震中坍塌了

To give up all opposition; yield:
屈服：放棄所有的對抗；屈服：
例句：
The school committee finally caved in to the demands of parents and teachers.
學(xué)校委員會終于屈從于家長和老師的要求

To explore caves.
挖洞

來源：
Middle English
中古英語
from Old French
源自 古法語
from Latin cava [from neuter pl. of] cavus [hollow] * see keu…-
源自 拉丁語 cava [] 源自cavus的中性復(fù)數(shù) [空的] *參見 keu…-

【引伸】
cav.er
n.（名詞）