omer

[oh-mer; Sephardic Hebrew aw-mer; Ashkenazic Hebrew oh-mer] /ˈoʊ mər; Sephardic Hebrew ɔˈmɛr; Ashkenazic Hebrew ˈoʊ mɛr/
noun
1.
a Hebrew unit of dry measure, the tenth part of an ephah.
2.
(usually initial capital letter) Judaism. the period of 49 days extending from the second day of Passover to the first day of Shavuoth.
Origin
< Hebrew ʿōmer
British Dictionary definitions for omer

omer

/ˈəʊmə/
noun
1.
an ancient Hebrew unit of dry measure equal to one tenth of an ephah
Word Origin
C17: from Hebrew `ōmer a measure

Omer

/ˈəʊmə/
noun
1.
(Judaism) a period of seven weeks extending from the second day of Passover to the first day of Shavuoth, and observed as a period of semimourning
Word Origin
named because sacrifices of an omer of grain were made
Word Origin and History for omer
n.

Hebrew measure of capacity (a little over 5 pints), from Hebrew 'omer.

omer in the Bible

a handful, one-tenth of an ephah=half a gallon dry measure (Ex. 16:22, 32, 33, 36)="tenth deal."