-st /st/ BrE AmE suffix
1 . forms written ORDINAL numbers with 1:
the 1st (=first) prize
my 21st birthday
2 . old use or biblical another form of the suffix ↑ -est (2):
thou dost (=you do)
-st /st/ BrE AmE suffix
1 . forms written ORDINAL numbers with 1:
the 1st (=first) prize
my 21st birthday
2 . old use or biblical another form of the suffix ↑ -est (2):
thou dost (=you do)
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012