堂弟在英语中被称为 "younger male cousin". 这个词来源于古英语中的 "þiuda" 和 "sunu"，分别意为 "同辈" 和 "儿子"。例句：

My younger male cousin is visiting from out of town. (我的堂弟从外地来看我了。)

I haven't seen my younger male cousin in years. (我好多年没见过我的堂弟了。)