Here's what rhymes with braincell.
fail sale sail veil hail shale vale hale faille male scale mail pale tail tale avail jail nail rail frail gale whale bail stale wail assail bale dale inhale pail snail flail kale mainsail unveil wale trail prevail entail email travail quail quale braille grail impale wassail hightail lugsail detail curtail exhale bewail derail gunwale topsail foresail monorail taffrail carrell pigtail ponytail countervail bobtail pellmell hangnail fingernail martingale nonpareil swallowtail tattletale