RONDLE
Source: 566, 567
rondle. Rondle, n. a round ball, round tower, song
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Ron″dle (?), n. [[Cf. Rondel.]] 1. 1. A rondeau. Spenser.
2. 2. A round mass, plate, or disk; especially (Metal.), the crust or scale which forms upon the surface of molten metal in the crucible.