with obj.
- poetic/literary surround or surrounding with or as if with a rampart〈诗/文〉（似）用（城墙, 壁垒）围绕：
the walls were circumvallated with a ditch.
墙四周围着一道水沟。
1
- poetic/literary surrounded or surrounding as if by a rampart〈诗/文〉（似）有城墙（或壁垒）围绕的：
we looked at the circumvallate mountains.
我们看着四周铜墙铁壁似的群山。
1.1
- Anatomy denoting certain papillae near the back of the tongue, surrounded by taste receptors【剖】乳突的。
词源
mid 17th cent. (as an adjective)： from Latin circumvallat- 'surrounded with a rampart', from the verb circumvallare, from circum 'around' + vallare, from vallum 'rampart'. The verb dates from the early 19th cent.