eigh·teen 
/ˌeɪtˈti:n/ noun
plural eigh·teens /ˌeɪtˈti:n/ noun [count] : the number 18
— eighteen adjective
▪ eighteen years
▪ eighteen years
— eighteen pronoun
▪ Eighteen (of them) were present.
▪ Eighteen (of them) were present.
— eigh·teenth /ˌeɪtˈti:nθ/ noun, plural eigh·teenths [count]
▪ one eighteenth of the total
/ˌeɪtˈti:nθ/ noun, plural eigh·teenths [count] ▪ one eighteenth of the total
— eighteenth adjective
▪ the eighteenth day
▪ the eighteenth day
— eighteenth adverb
▪ He finished eighteenth in the race.
▪ He finished eighteenth in the race.
