What is another word for "cofferdam"?

Roget's Thesaurus (1911) lists these synonyms for "cofferdam": apart, aside, banish, bar, bating, blackball, disjoin, eliminate, elimination, except, exception, exclude, exclusion, exclusive, exile, expulsion, from, garble, inadmissible, included, lay, leave, neglect, nonadmission, not, off, omission, omit, out, over, overboard, pass, preclusion, prohibition, put, reject, rejection, relegate, repudiate, repudiation.