C7-9 Correct 啸 / xiào / Strokes Definition to hiss/to whistle Example As a Verb (of humans) whistle; scream As a Verb (of some birds or animals) cry; howl; roar As a Verb (of the wind, the sea, etc) howl; roar As a Verb (of a bullet, plane, etc) whirr; whiz; whistle