What is the meaning of Ciet?

third-person singular present active indicative of cieĊ

closed, shut, sometimes also metaphorically

imperfective counterpart of the prefix aiz-, indicating that the object of the verb was closed, shut, or filled

imperfective counterpart of the prefix sa-, indicating that the object of the verb was caught, captured, or bound

used together with the prefixes aiz- or sa-, to reinforce their meanings

Source: wiktionary.org