† canal mouldingn.Obsoleterare (apparently) a moulding (mouldingn.1 2b) with a concave semi-tubular profile.
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1902 L. V. LockwoodColonial Furnit. Amer. (new ed.) 56 The moulding..is formed by bordering an applied strip about half an inch wide with a bead-moulding. This is sometimes known as a canal-moulding.