It appears on my computer keyboard (on the "1" key) and my iPhone keyboard, and is distinct from the ""า" character ("ah") that appears on the "k" key.

What's it used for? I don't think I've ever seen it in use.

Thanks!

This is the Thai character ลากข้างยาว and is only used after ฦ and ฤ to form the long version of this two vowels.

This is the Thai character ลากข้างยาว and is only used after ฦ and ฤ to form the long version of this two vowels.

Thank you.

Are there any words in common use in which it appears?

ๅ use with ฤ (รึ short sound) to be ฤๅ (รือ long sound) and ฦ(ลึ) to be ฦๅ(ลือ). They are extremely rarely use.

http://dict.longdo.com/search/%E0%B8%A4%E0%B9%85

http://dict.longdo.com/search/%E0%B8%A6%E0%B9%85

This vowel is rarely used. Examples:

ฤๅษี = n. ascetic, meditating recluse, hermit, anchorite

ฤๅสาย = n. form of addressing a superior; adj. respected, reverenced

This vowel is rarely used. Examples:

ฤๅษี = n. ascetic, meditating recluse, hermit, anchorite

ฤๅสาย = n. form of addressing a superior; adj. respected, reverenced

Thanks. I've been mispelling ฤๅษี all these years as ฤษี. Glad to finally have a use for that key.

Thanks. I've been mispelling ฤๅษี all these years as ฤษี. Glad to finally have a use for that key.

Not mispelling. Both forms are given in the Royal Institute dictionary. I rather suspect that the ฤษี form is these days more commonly used.