1flut·ter 
/ˈflʌtɚ/ verb
flut·ters; flut·tered; flut·ter·ing /ˈflʌtɚ/ verb 1 of a bird or insect a : to move or flap the wings quickly without flying [+ obj] ▪ The bird was fluttering its wings. [no obj] ▪ The bird's wings were fluttering.
b [no obj] : to fly lightly with quick beats of the wings
▪ We watched the butterflies fluttering in the garden. 2 : to move with quick, light movements [no obj] ▪ Leaves fluttered to the ground. ▪ The breeze made the curtains flutter. [+ obj] ▪ The breeze fluttered the curtains. ▪ She fluttered her eyelashes at him. 3 [no obj] : to move or behave in a nervous and excited way
▪ She nervously fluttered around the office. ◊If your heart/stomach flutters, you become very nervous or excited.
▪ Her heart fluttered when she saw the letter in the mail. ▪ Just the mention of his name makes my stomach flutter.
b [no obj] : to fly lightly with quick beats of the wings
▪ We watched the butterflies fluttering in the garden.
▪ She nervously fluttered around the office. ◊If your heart/stomach flutters, you become very nervous or excited.
▪ Her heart fluttered when she saw the letter in the mail. ▪ Just the mention of his name makes my stomach flutter.
