Is “Mumps” a Scrabble word?

1.A grimace.

1.To mumble, speak unclearly.

2.To move the lips with the mouth closed; to mumble, as in sulkiness.

3.To beg, especially if using a repeated phrase.

1.A cube of peat.

1.A contagious disease caused by the Mumps virus of the genus Rubulavirus, mostly occurring in childhood, which causes swelling of glands in the face and neck.

2.A gloomy or sullen silence.