mare

noun
1
a female horse or donkey
مادیان, اسب ماده, خر ماده
compare brood mare, filly, stallion
2
a nightmare(= an experience that is very frightening and unpleasant, or very difficult to deal with)
کابوس, تجربه آزاردهنده, شرایط دشوار
The journey home was a bit of a mare as all of the trains were delayed.
I had a complete mare booking tickets for the concert.