field balm

definition: low-growing strongly aromatic perennial herb of southern Europe to Great Britain
example:
speech part: noun
synonyms: lesser calamint
definition: trailing European aromatic plant of the mint family having rounded leaves and small purplish flowers often grown in hanging baskets
example:
speech part: noun
synonyms: alehoof gill-over-the-ground runaway robin ground ivy

How field balm is being used?