balance beam, beam
['binder, ring-binder', 'breakwater, groin, groyne, mole, bulwark, seawall, jetty', 'promontory, headland, head, foreland', 'flatworm, platyhelminth', 'clog, geta, patten, sabot', 'ear, spike, capitulum', 'nematode, nematode worm, roundworm']