Empty restaurants run out of menus, their strange meats unpierceable by the average fork.    From Wordnik.com.  [Documents and Disorder] Reference

The legends down through the ages of the invincible and irresistible sword and unpierceable armor are evidence of the warrior's yearning for some such added security in battle.    From Wordnik.com.  [The HurricaneStory]

Here the unpierceable walls were washed every morning by an automatic sluice.    From Wordnik.com.  [The Ball and the Cross] Reference

"Estelle is a courageous woman and discreet with the unpierceable reticence of spontaneity.".    From Wordnik.com.  [Balloons] Reference

The iron line of the British was unpierceable!.    From Wordnik.com.  [Deeds that Won the Empire Historic Battle Scenes] Reference

Eurysakes, hold mine, the unpierceable.    From Wordnik.com.  [The Seven Plays in English Verse] Reference

The suit, they allowed, was adamantine, unpierceable.    From Wordnik.com.  [Thomas Wingfold, Curate] Reference

The veil of the temple -- the unpierceable veil -- is rent asunder from top to bottom, and that dreaded recess containing the Hebrew mysteries -- the fatal ark with the tables and seven-branched candelabrum -- is disclosed by the light of unearthly flames to the God-deserted multitude.    From Wordnik.com.  [Intentions] Reference