Their,
pron. & a. [OE.
thair, fr. Icel.
þeirra,
þeira, of them, but properly gen. pl. of the definite article; akin to AS.
&edh;āra,
&edh;\'d6ra, gen. pl. of the definite article, or fr. AS.
&edh;\'d6ra, influenced by the Scandinavian use. See
That.].