1) Done at a table 2) Monthly 3) Table 4) The dining table 5) Used at the dining table 
of, like or pertaining to the dinner-table; monthly
• (a.) Occurring once in a month; monthly. • (a.) Belonging to the table; transacted at table; as, mensal conversation.
Men'sal adjective [ Latin mensalis , from mensa table.] Belonging to the table; transacted at table; as, mensal conversation. 
[adj] - used at the dining table
adjective the dining table