ppl. a. (UN-1 8.)

1

[1775.  Ash.]

2

1834.  K. H. Digby, Mores Cath., V. viii. 288. See, then to what a distance your unribbed bark is driven.

3

1851.  Ruskin, Stones Ven., I. xxix. § 3. When the vaulting is unribbed, as in plain waggon vaults.

4