1. 名詞
   whatchamacallit複數: 某某, 那東西
   /用以稱呼一時想不起名稱的人或東西/
   

   同義字詞
   dingus,doodad,doohickey,hickey,thingamabob,thingamajig,thingumajig,whatnot,whatsit,whatsis
   

例句

1. You're the guy who does the whatchamacallits , you know, "MacGyverisms"; turns one thing into another?
2. I have 2 mostly black angelfish, 1 that's mostly silver, 3 zebra Danios, a beta, a plecostomus, or however you spell it and a "whatchamacallit" catfish all in a 55 gallon tank." Whatchamacallits are hard to find this time of year. (humor attempted in that last sentence).