shot across the bows

/SH AA1 T AH0 K R AO0 S DH AH0 B AW0 Z/
noun
  1. 1

    A warning that negative consequences will be faced if something is carried out or allowed to continue.

Synonyms

Source: https://en.wiktionary.org/wiki/shot%20across%20the%20bow, https://en.wiktionary.org/wiki/shot%20across%20the%20bows