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