Anyone born on Northern Ireland.

(biochemistry) A unit comprising two or more iron atoms and bridging sulfur ligands in an iron-sulfur protein.

(Britain) Alternative spelling of iron-sulfur cluster

(biochemistry) any protein in which iron is coordinated with cysteine sulfur and sometimes also with inorganic sulfur; they have electron transfer and enzymatic function

(Britain) Alternative spelling of iron-sulfur protein

(historical) A falsely or neo-medieval torture device invented in the 18th century consisting of a chamber lined with spikes which closes upon and impales the victim inside.

Incapable of being reclaimed; not reclaimable. / Unredeemable.

Not recoverable; incapable of being recovered. / That cannot be recovered from or made good; irremediable.

Any ore of iron which is impure through the admixture of silica or clay. / A type of vitreous pottery similar to stoneware

In an irascible manner.