What is matalinghaga or matalinhaga in English?

The Word "matalinhaga or matalinghaga" is in Tagalog or Filipino language (national language of the Philippines). In English language it's meaning is "idiomatic".

Example: "Idiomatic expression" if translated in Tagalog would be "Matalinghagang pagpapahayag" or "Matalinhagang pahayag".