Full of, or edged with, reeds.
High and thin in tone.
"I'd Be Lost Without You" seems somewhat out of place from a vocal viewpoint — Lewis's slightly reedy middle soprano is very expressive and absolutely true, but doesn't have enough dark body to fully deal with the torchy melody.
Tall and thin.
A surname.
From Middle English reedy, reedi, reeddy, equivalent to reed + -y.
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