a.

1

1607.  Topsell, Four-f. Beasts, 74. [Cows] wel ribbed.

2

1707.  [see RIBBED ppl. a. 1].

3

1847.  W. C. L. Martin, The Ox, 80/2. A heavy and well-ribbed carcass.

4

1908.  Westm. Gaz., 25 April, 3/1. Large, well-ribbed umbrellas warranted not to blow inside out.

5