diffuser, diffusor - baffle that distributes sound waves evenly

plate - a sheet of metal or wood or glass or plastic

stump, mix up - cause to be perplexed or confounded; "This problem stumped her"

befuddle, confound, confuse, discombobulate, fox, bedevil, fuddle, throw - be confusing or perplexing to; cause to be unable to think clearly; "These questions confuse even the experts"; "This question completely threw me"; "This question befuddled even the teacher"

riddle - set a difficult problem or riddle; "riddle me a riddle"

elude, escape - be incomprehensible to; escape understanding by; "What you are seeing in him eludes me"

disappoint, let down - fail to meet the hopes or expectations of; "Her boyfriend let her down when he did not propose marriage"

foreclose, forestall, preclude, prevent, forbid - keep from happening or arising; have the effect of preventing; "My sense of tact forbids an honest answer"

dash - destroy or break; "dashed ambitions and hopes"

short-circuit - hamper the progress of; impede; "short-circuit warm feelings"

ruin - destroy or cause to fail; "This behavior will ruin your chances of winning the election"

limit, throttle, trammel, restrain, confine, bound, restrict - place limits on (extent or access); "restrict the use of this parking lot"; "limit the time you can spend with your friends"