This idiom means to initiate conversation or ease tension in a social situation, making it more comfortable or friendly. It suggests overcoming awkwardness or formality, like breaking through a barrier, and is used in contexts of meetings, introductions, or strained interactions.

The phrase comes from maritime history, where ships would break ice to navigate frozen waters, symbolizing overcoming obstacles. It appeared metaphorically in English by the 16th century, with Sir Thomas North’s 1579 translation of Plutarch using ‘break the ice’ for starting dialogue. Samuel Pepys’ 1660 diary and later Lord Byron’s *Don Juan* (1823) reinforced its social meaning. Its use grew in the 19th century, reflecting social etiquette’s focus on easing interactions.