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Webster 1913 Edition

Noun.

[Cf.

A rondeau.

[Obs.]

Spenser.

A round mass, plate, or disk; especially

(Metal.)

, the crust or scale which forms upon the surface of molten metal in the crucible.

Noun.

[from round.] A round mass. [Not in use.]

rondle ‎(plural rondles)

(obsolete) A rondeau.
(Can we find and add a quotation of Spenser to this entry?)
(obsolete) A round mass, plate, or disk, especially the crust or scale that forms upon the surface of molten metal in the crucible.