English
tablemate
From table + -mate.
A compound of table + -mate
Proto-Italic *taðlā ‘board’
Latin tabula ‘tablet’
Old English tabele ‘board’
Middle English table ‘the top of a table’
English table
Today it means
noun Someone with whom one shares a table.
Language periods are conventional ranges, not dates for this word.
Etymograph / tablemate