In a message dated 98-11-13 16:20:38 EST, you write:
<< double', the noun referring to a two-manual harpsichord, >>
<<< Seventeenth-century
organists wrote of 'double organs'; >>
So it's an adjective, too. I've seen "double harpsichords" here and there.
How about, "double-manualed"?
Tyre,
Dunedin