Definition of "willowy"

The lovely face grew rigid, and the gracious willowy form seemed to erect itself.

1886 October – 1887 January, H[enry] Rider Haggard, She: A History of Adventure, London: Longmans, Green, and Co., published 1887

Probably the biggest gasp in the Winona Ryder shoplifting trial last week came when two sales clerks in a row testified that the willowy actress had asked them to fetch her Coca-Colas from the Saks Fifth Avenue cafeteria.

2002 November 3, Rick Lyman, “For the Ryder Trial, a Hollywood Script”, in The New York Times‎