Dictionary.com
Thesaurus.com

Venus's-hair

American  
[vee-nuh-siz-hair] / ˈvi nə sɪzˈhɛər /

noun

  1. a delicate maidenhair fern, Adiantum capillus-veneris.


Venus's-hair British  

noun

  1. a fragile maidenhair fern, Adiantum capillus-veneris, of tropical and subtropical America, having fan-shaped leaves and a black stem

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of Venus's-hair

First recorded in 1540–50