toilet  
noun uk/ˈtɔɪ.lət/ us/ˈtɔɪ.lət/
  (CONTAINER)              
 A1 [ C ]坐便器,马桶 
a bowl-shaped device with a seat that you sit on or stand near when emptying the body of urine or solid waste, or another device used for this purpose
  I was on (= using) the toilet when the phone rang. 电话铃响时我正在上厕所。 
 Don't forget to flush the toilet. 别忘了冲马桶。 
UK Excuse me, Miss Lewis, I need/want (to go to) the toilet. 对不起,刘易斯小姐,我要去一下洗手间。 
 The toilet seat was cracked and there was no paper. 马桶座圈裂了,卫生纸也没有了。 
  [ C ] UK (US bathroom)卫生间 
a room with a toilet in it
  Someone's in the toilet. 卫生间里有人。 
 go to the toiletA2 UK上厕所 
to empty the body of urine or solid waste, usually using a toilet to do so
  It's going to be a long drive, kids, so if you want to go to the toilet, do so now. 孩子们,我们要作长途旅行,所以如果要上厕所现在就去。 
 toiletsA2 [ plural ] UK (US restroom); (US also ladies'/men's room) 卫生间,厕所
a room or small building in a public place in which there are several toilets
  Do you know where the ladies' toilets are? 你知道女厕所在哪儿吗? 
 - More examples
 - My children never flush the toilet after them.
 - Do you need the toilet right now or can you hang on for a while?
 - Can I go to the toilet, please, Miss?
 - We hated using that outside toilet - there were always spiders in there!
 - The sign on the toilet door said 'Engaged'.
 
  (WASHING)      
 [ U ] old-fashioned formal梳洗打扮 
the process of washing and dressing yourself
  Virginia had spent longer than usual over her toilet that evening, with pleasing results. 那天晚上弗吉尼娅梳洗打扮的时间比平时要久,效果很好。