caravanserai (n.) Look up caravanserai at Dictionary.com
1590s, carvanzara, "Eastern inn (with a large central court) catering to caravans," ultimately from Persian karwan-sarai, from karwan (see caravan) + sara "palace, mansion; inn," from Iranian *thraya- "to protect," from PIE root *tere- "to cross over, pass through, overcome" (see through).