Meanings
unit, unitsʼ place, onesʼ place (the numbers 0 to 9, possibly as part of a larger number or fraction)
Im Deutschen werden die Einer vor den Zehnern gesprochen, wie zum Beispiel in „vierundzwanzig“.In German [numbers], the ones are said before the tens, e. g. „vierundzwanzig“ [lit. "four-and-twenty"].
something made for one person, made up by one item, (especially water sports) single scull
one-meter diving board