Where does “costmary” come from?

costmary (English) comes from Latin costum, from Ancient Greek κόστος, from Sanskrit कुष्ठ, from Sanskrit स्थ, from Sanskrit स्था, from Proto-Indo-European *steh₂-.

costmary (English): An aromatic plant, Tanacetum balsamita, once used...

Definitions

An aromatic plant, Tanacetum balsamita, once used...

Ancestry of “costmary”, step by step

Step	Language	Word	Meaning
1	Latin	costum	An Oriental aromatic plant
2	Ancient Greek	κόστος	costus (Saussurea costus), used as a spice
3	Sanskrit	कुष्ठ	crepe ginger; Hellenia speciosa (syn. Costus speciosus), traditionally used to cure तक्मन्
4	Sanskrit	स्थ	building; establishing
5	Sanskrit	स्था	to stand, station oneself, take up a position on;...
6	Proto-Indo-European	*steh₂-	—

Every word from Proto-Indo-European *steh₂- →Every word from Sanskrit स्था →Every word from Sanskrit स्थ →