Hypertext Webster Gateway: "Sao"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Sao \Sa"o\, n. (Zo["o]l.)
Any marine annelid of the genus {Hyalin[ae]cia}, especially
{H. tubicola} of Europe, which inhabits a transparent movable
tube resembling a quill in color and texture.
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