a. (UN-1 7 b.)
1600. Fairfax, Tasso, XX. lxvi. Is he then vnpearceable … That neither force nor foe he needes regard?
1611. Cotgr., Impenetrable,… vnpierceable.
1801. Southey, Thalaba, II. viii. O’er the two remaining lives A cloud unpierceable had risen.
1849. Mangan, Poems (1903), 76. Conal’s unpierceable shirt of mail.
