Definition of go-to-bed-at-noon in English:

go-to-bed-at-noon

noun

English Regional
  • Goat's beard, Tragopogon pratensis (family Asteraceae), the flowers of which close at midday; also called Jack-go-to-bed-at-noon.

Origin

Late 16th century; earliest use found in Henry Lyte (1529–1607), botanist and antiquary.