n.[C]

1. （母雞）咯咯的叫聲
2. 【美】【俚】呆子，笨蛋

vi.

1. （母雞）發咯咯聲喚小雞

vt.

1. 發咯咯聲呼喚（或表示）
   cluck one's disapproval

   嘖嘖地表示反對

v.

1. (of a hen) make a short, low sound.
2. (cluck over/around) express fussy concern about.

n.

1. the short, low sound made by a hen.
2. N. Amer. informal a foolish person.