tunnel
英 ['tʌnl]
美['tʌnl]
	    - n. 隧道;坑道;洞穴通道
 - vt. 挖;在…打开通道;在…挖掘隧道
 - vi. 挖掘隧道;打开通道
 
英英释意
- 1. a passageway through or under something, usually underground (especially one for trains or cars);
 - "the tunnel reduced congestion at that intersection"
 
- 2. a hole in the ground made by an animal for shelter