How do you spell their?

The correct spelling is T-H-E-I-R. Of or relating to them or themselves especially as possessors, agents, or objects of an action

What does their mean?

Of or relating to them or themselves especially as possessors, agents, or objects of an action

their

Of or relating to them or themselves especially as possessors, agents, or objects of an action

Source: Merriam-Webster Dictionary API

"their furniture"

Middle English, from their, pronoun, from Old Norse theirra, genitive plural demonstrative & personal pronoun; akin to Old English thæt that

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