I could not understand what is "tea ring" in this sentence, all I searched resulted in a "Swedish tea ring", as bread or cake, and I am pretty sure it is not.
My guess is : it refers to some kind of tea marks/stains left on the mugs? ? But WHY use the word 'ring'? I could not find any explanation in the dictionary referring 'ring' as a stain or mark or something. Could any one help me to get a glimpse of the sentence?
Here is the sentence in the context:
I had finally begun to understand the consolations of cleaning. I mopped, cleaned windows and changed duvets. I was a constant whirl of activity. No dust mote escaped my eye, no tea ring my forensic attentions. I was dislodging the limescale on the bathroom taps using kitchen roll soaked in vinegar (my mother’s tip) when I heard Will’s chair behind me.
Me Before You by Jojo Moyes