An expression used to show contentment for something
Mmm, this is a tasty pie!
An expression used to show thought or reflection
Mmm, I see what you mean.
An expression used to show being muffled or not able to speak clearly, as well as "mmph".
Yes.
A period into which a year is divided, historically based on the phases of the moon.
July is my favourite month.
A period of 30 days, 31 days, or some alternation thereof.
We went on holiday for two months.
(in the plural) A woman's period; menstrual discharge.