Where does “竜舌蘭” come from?

竜舌蘭 (Japanese) comes from Japanese 舌, from Old Japanese した, from Translingual − — A long signal, used to form Morse code text, together with. (a short signal).

竜舌蘭 (Japanese): agave

Definitions

agave

Ancestry of “竜舌蘭”, step by step

竜舌蘭 traces back through 3 separate lines of ancestry.

via Japanese 舌

Step	Language	Word	Meaning
1	Japanese	舌	tongue
2	Old Japanese	した	—
3	Translingual	−	A long signal, used to form Morse code text, together with. (a short signal)

via Japanese 蘭

Step	Language	Word	Meaning
1	Japanese	蘭	an orchid
2	Middle Chinese	蘭	—

via Japanese 竜

Step	Language	Word	Meaning
1	Japanese	竜	a Chinese dragon
2	Middle Chinese	龍	—

Every word from Translingual − →Every word from Old Japanese した →Every word from Japanese 舌 →