涉及(与某人的)争论(或争端、纠纷)
lock horns (with sb) (over sth)
to get involved in an argument or a disagreement with sb
The company has locked horns with the unions over proposed pay cuts.公司与工会就减薪计划争论不休。
释义来自《牛津高阶英汉双解词典》第 9 版