What is the etymology of "Mattom/Mattam"? (മറ്റം)

In many Kerala villages, the word "മറ്റം" (Mattom/Mattam) is amalgamated with the other word. Examples like:

• Chathamattom (ചാത്തമറ്റം),
• Moolamattom (മൂലമറ്റം),
• Nellimattom (നെല്ലിമറ്റം)
• Paimattom (പൈമറ്റം)
• Pattimattom (പട്ടിമറ്റം),
• Punnamattom (പുന്നമറ്റം)
• Palamattom (പാലമറ്റം).

This is my list from the Ernakulam district (credit goes to my Acchan). Also when I searched it up on Google, I found:

• Mattom (മറ്റം) in Thrissur and Alappuzha district (verifiable?)

When I searched for its meaning, I got the meaning "place," "locality," etc., but I didn't find it satisfactory. So, I would like to confirm with you because I'm a Pravasi Malyali kid, and my parents don't know its meaning.