plural of grandmother-in-law

A grandmother of one's spouse.

plural of maternal grandmother

plural of paternal grandmother

plural of great grandmother (alternative spelling of great-grandmothers).

A hypothetical neuron that represents a complex but specific concept or object, and activates upon recognition.

plural of grandmother cell

plural of grandmother clock

A longcase clock that is relatively short in height, smaller than a grandfather clock.

(BDSM) A rule at certain events requiring that one's behaviour and appearance be such that it would not shock one's grandmother.