bol·lix also bol·lox (bŏl'ĭks) tr.v.
bol·lixed also bol·loxed, bol·lix·ing also bol·lox·ing, bol·lix·es also bol·lox·esInformal To throw into confusion; botch or bungle: managed to bollix up the whole project.
[Alteration of ballocks, testicles, from Middle English balloks, from Old English beallucas; see bhel-2 in Indo-European roots.] bol'lix n.
"bungle," respelling (euphemistic?) of bollocks, pl. of bollock "testicle," from O.E. beallucas "testicles," from P.Gmc. *ball-, from PIE *bhel- "to inflate, swell."