The Linear B word ma-ka
Word ma-ka
ma ka
Transliteration maka
Meaning mother gaia

Comments

Translitterated as Mā Gā.

However, as Pierini notes this word might be connected to μάκαρ, not mother earth.

Further reading
Pierini, R. (2017). An alphabetic parallel for Mycenaean ma-ka. Kadmos, 56(1-2), 89-106.