In everyday English, there are many expressions called “idioms” that might sound strange but have specific meanings. These phrases often use common words in unusual ways. Today, we’ll explore some fun and useful expressions that use the word “cross.” These idioms can help you sound more like a native speaker and understand more when you listen to English conversations. Cross Idioms Here are 20 cross idioms in English with meaning and example sentence for each. 1. Cross my heart Meaning: Promise sincerely Example: Cross my heart, I will not tell anyone. 2. Cross the line Meaning: Behave improperly Example: He