Maintain part of castle in revolt

Wiktionary Word definitions in Wiktionary
vb. 1 (context transitive English) To maintain; to preserve; to prevent from deteriorating. 2 (context transitive idiomatic English) To continue with (work, etc). 3 (context intransitive idiomatic English) To stay even or ahead.

Wikipedia Word definitions in Wikipedia
" Keep Up " is a song by English YouTube personality and rapper KSI , with featured vocals from English MC Jme . It was released as the lead single from KSI's debut EP of the same name . It was originally due for release on 1 January 2016 but was brought ...

WordNet Word definitions in WordNet
v. maintain a required pace or level; "He could not keep up and dropped out of the race" lengthen or extend in duration or space; "We sustained the diplomatic negociations as long as possible"; "prolong the treatment of the patient"; "keep up the good work" ...