WordNet (r) 3.0 (2006):

bamboo curtain
    n 1: an ideological barrier around communist China especially in
         the 1950s and 1960s

Moby Thesaurus II by Grady Ward, 1.0:

81 Moby Thesaurus words for "bamboo curtain":
   Berlin wall, Pillars of Hercules, arch dam, backstop, bank, bar,
   barrage, barrier, barrier of secrecy, bear-trap dam, beaver dam,
   blackout, boom, border, border ground, borderland, breakwater,
   breastwork, brick wall, buffer, bulkhead, bulwark, censorship,
   cofferdam, curtain, dam, defense, dike, ditch, earthwork,
   embankment, fence, frontier, frontier post, gate, gravity dam,
   groin, hush-up, hydraulic-fill dam, iron curtain,
   ironbound security, jam, jetty, leaping weir, levee, logjam, march,
   marches, marchland, milldam, moat, mole, mound, oath of secrecy,
   official secrecy, outpost, outskirts, pall, parapet, portcullis,
   rampart, repression, roadblock, rock-fill dam, seal of secrecy,
   seawall, security, shutter dam, smothering, stifling, stone wall,
   suppression, three-mile limit, twelve-mile limit, veil,
   veil of secrecy, wall, weir, wicket dam, work, wraps