Definitions

1. noun

a female parent; a mother

“The mater of the newborn baby was overjoyed with the birth.”

2. noun

the upper or outermost layer of a plant or tree, especially a leaf or a bud

“The gardener carefully removed the damaged mater from the stem.”

3. noun

a type of tree or shrub, especially the ash tree

“The mater tree provided shade for the children to play under.”