Strong's #1055: biythan (pronounced bee-thawn')
probably from 1004; a palace (i.e. large house):--palace.
Brown-Driver-Briggs Hebrew Lexicon:
ּ
bı̂ythân
1) house, palace
Part of Speech: noun masculine
Relation: probably from H1004
Usage:
This word is used 3 times:
Esther 1:5: "days, in the court of the garden of the king's palace;"
Esther 7:7: "from the banquet of wine in his wrath went into the palace garden: and Haman stood up"
Esther 7:8: "Then the king returned out of the palace garden out of the palace garden into the place of the banquet"