User blog comment:Raindrop57/The School Game!/@comment-5294711-20131107072628/@comment-5294711-20131113150731

Well it's actually called "cầu" here, which just means... a sphere/spherical object :V, a bridge or... a toilet (cầu tiêu) :V, for whatever weird reasons. Its full name is "cầu lông", which is just "cầu" (which I mentioned above) plus "lông" (feather).