(adj.) Once a woman reaches middle age and her formerly remarkable and youthful good looks have completely lost their edge, she develops an air of such utter harmlessness that she is no longer attractive to men. A woman is described as "avuncular" when she stops looking like a sexual entity and starts looking like her Aunt Betty.
"At my age, with my looks going into their middle-aged stretch, my nieces and nephews now look at me with wonder and refer to me as their 'avauntcular' auntie. I love it!"
-- Overheard when two middle-aged women were chatting near a watercooler at their office on Madison Avenue in New York