The Collaborative International Dictionary
Expugnable
Expugnable \Ex*pug"nable\ ([e^]ks*p[u^]g"n[.a]*b'l), a. [L. expugnabilis.] Capable of being expugned.
Wiktionary
expugnable
a. Capable of being take by storm
WordNet
expugnable
adj. susceptible to being stormed [syn: stormable]