Found 2 items, similar to whatchamacallit.
English → English (WordNet) Definition: whatchamacallit whatchamacallit n : miscellaneous unspecified objects; “the trunk was full of stuff” [syn: stuff, whatsis, sundry, sundries]
English → English (gcide) Definition: whatchamacallit whachamacallit \whachamacallit\, n. Any object whose name is forgotten, or not known. [Also spelled whatchamacallit.] Syn: thingumbob, doohickey, dingus, whatsis, what-do-you-call-it. [PJC] whatchamacallit \whatchamacallit\, n. Any object whose name is forgotten, or not known. [Also spelled whachamacallit.] Syn: thingumbob, doohickey, dingus, whatsis, what-do-you-call-it. [PJC]