The word "chetrum" is a noun that refers to a unit of currency used in Bhutan. Specifically, 100 chetrums equal 1 ngultrum, which is the main currency in Bhutan.
In more advanced contexts, you might discuss the chetrum in relation to economic topics, such as inflation or currency exchange.
In English, "chetrum" does not have other meanings outside of its use as a currency in Bhutan.
Since "chetrum" is a specific currency term, it doesn’t have synonyms in the way common words do. However, you can think of it as a "subunit" of the ngultrum.
There are no idioms or phrasal verbs specifically associated with the word "chetrum," as it is a technical term related to currency.
To sum up, chetrum is a small unit of money in Bhutan, where 100 chetrums make up 1 ngultrum.