Wiktionary
n. (context idiomatic English) One whose views are easily and regularly changed by the persuasion or influence of others.
Wikipedia
Willow in the Wind is the fifth studio album by American country music artist Kathy Mattea. It was released in 1989 (see 1989 in country music) on Mercury Records. The album is her highest-peaking entry on the Top Country Albums charts, where it reached number 6. It was also certified gold by the RIAA. Four singles were released from it, and all four reached Top Ten on the Billboard country singles charts. First were the back-to-back number 1 hits "Come from the Heart" and "Burnin' Old Memories", followed by the number 10 "Where've You Been" and number 2 "She Came from Fort Worth". "Where've You Been" was also a minor hit on the Hot Adult Contemporary Tracks charts, peaking at number 25 there. This song also earned her the 1990 Grammy Award for Best Female Country Vocal Performance.
Usage examples of "willow in the wind".
Her tender arms embraced him, and they kissed, and John writhed like a willow in the wind burned by the hot fires of jealousy, for he too, now, had to admit that, like the others, he was head over heels in love with this slim girl.