Eschable, anyone?

Earthbound's comment about hating Winter Wonderland reminded me of another annoyance that pops up this time every year ...

Has anyone ever run into the word "eschable"?

When I was in high school, I was in choir.  I very distinctly remember singing "Winter Wonderland" as "we'll frolic and play, the eschable way" (not "eskimo") and our teacher explaining that eschable was an old English word meaning friendly.

I have never run across the word since.  Even with the Internet.

I swear I didn't do drugs in high school.