"Bite your tongue" means:

Answer - To hold back what you want to say.• Bite your tongue:English meaning: to stop yourself from saying something that you would really like to say.Bangla meaning: নিজের কথা চেপে রাখা বা যা ভাবছো তা না বলা।Example: - I wanted to tell him exactly what I thought of him, but I had to bite my tongue.- I wanted to tell him he looked ridiculous, but I bit my tongue. Source: Cambridge Dictionary.