cluck
verb- [intransitive]
when a chicken clucks, it makes a series of short low sounds (鸡)咯咯地叫,发出咯咯声 - [intransitive]
to make a short low sound with your tongue to show that you feel sorry for somebody or that you think something is bad (表示遗憾或不赞成)发出啧啧声
Word Originlate 15th cent.: imitative, corresponding to Danish klukke, Swedish klucka.