/i lev"euhnth/ , adj.
1. next after the tenth; being the ordinal number for 11.
2. being one of 11 equal parts.
n.
3. an eleventh part, esp. of one ( 1 / 11 ).
4. the eleventh member of a series.
[ bef. 1000; ME enleventh, enlefte, OE endlyfta (akin to OFris andlofta, OS ellifto ). See ELEVEN, -TH 2 ]