their

Meanings

1. 1
   det

   Belonging to, from, of, or relating to, them (plural).

   they will meet tomorrow at their convenience

2. 2
   det

   Belonging to someone (one person, singular), or occasionally to something.

   There's not a man I meet but doth salute me As if I were their well-acquainted friend […]

3. 3
   adv

   Misspelling of there.

4. 4
   contraction

   Misspelling of they’re.

Etymology

From Old Norse þeirra. Replaced native Old English heora.