[ twɛlfθ , twɛlθ ]
■ ordinal number
1》 constituting number twelve in a sequence; 12th.
2》 ( a ~/one ~ ) each of twelve equal parts into which something is or may be divided.
3》 Music an interval or chord spanning an octave and a fifth in the diatonic scale, or a note separated from another by this interval.
4》 ( the (Glorious) Twelfth ) (in the UK) 12 August, the day on which the grouse-shooting season begins.
Derivatives
~ly adverb
twelvefold adjective & adverb