The Collaborative International Dictionary of English v.0.48:
Funambulist \Fu*nam"bu*list\, n. A ropewalker or ropedancer. FunambuloWordNet (r) 3.0 (2006):
funambulist n 1: an acrobat who performs on a tightrope or slack rope [syn: funambulist, tightrope walker]