唿 (w)

(hū) to whistle (with fingers in one's mouth); onomat. for the sound of the wind

唿哨 (w)

(hūshào) to whistle (with fingers in one's mouth); nowadays written 呼哨

唿喇 (w)

(hūlǎ) whoosh

唿喇喇 (w)

(hūlàlà) roar of the wind