parsley piert
Concise Oxford English Dictionary © 2008 Oxford University Press:
parsley piert /ˌpɑːslɪ ˈpɪət/
▶noun a small hairy plant with divided leaves, growing as a weed of fields and waste places. [Aphanes arvensis.]
– origin C16: prob. an altered form of Fr. perce-pierre, lit. ‘pierce stone’, used to denote various plants living in crevices.
'parsley piert' also found in these Oxford entries:

