fort noun
ADJ. hill | Iron Age, Roman, Saxon, etc. an Iron Age hill fort
VERB + FORT attack, besiege | hold Government forces managed to hold the fort.
FORT + VERB be/come under attack, be/come under siege The fort was under attack for three days. | fall The fort finally fell after a week of intense fighting.
PREP. at/in a/the ~ All was calm at the fort that night.
You can also check other dicts: fort (English, 中文解释 ), wordnet sense, Collins Definition