Noun which may take the genitive case particle 'no'
main; principal
昨日の競馬のメインレースは、とってもかたくおさまったよ。ああいうのを、銀行レースって言うんだよね。The main race yesterday was no surprise. That's the kind of race you can bank on. Noun
main dish; main course
Abbreviationsee メインディッシュ
main part; principal part
Also written メーン