twelfth

nouns

position 12 in a countable series of things
twelfth
is a type of (narrower)
relative status
"his salary was determined by his rank and seniority"
rank
one part in twelve equal parts
duodecimal, one-twelfth, twelfth, twelfth part

adjectives

coming next after the eleventh and just before the thirteenth in position
12th, twelfth