The clue "___ mater (brain membrane)" last appeared in the Wall Street Journal crossword on November 4, 2025. The correct answer for this puzzle is "PIA", a 3-letter word.
Solution PIA is our most searched for solution by our visitors. Solution PIA is 3 letters long. We have 0 further solutions of the same word length.
There are 2 solutions. The longest is DURA with 4 letters, and the shortest is PIA with 3 letters.
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Solutions are between 3 and 4 letters long.