Definition of brotherwort in English:

brotherwort

noun

historical, rare
  • Any of several aromatic herbs, including pennyroyal (Mentha pulegium), wild thyme (Thymus serpyllum), and wild marjoram (Origanum vulgare).

Origin

Old English; earliest use found in Brussels Glossary. Apparently from brother + wort, although the semantic motivation of the first element is unclear.

Pronunciation

brotherwort

/ˈbrʌðəwəːt/