a, l, c, h, m, t, i, w are letters that make 'whatchamacallit'
hatch, mac, IT, Call, AM, MA, ham, TC, Ham, ma, AC, at, HA, mA, lit, all, li, call, hat, AL, CA, Ac, Al, Am, At, Ca, Li, Tc are words within 'whatchamacallit'
1 possible definitions for 'whatchamacallit'
Under this definition, whatchamacallit is a noun and has the following properties:
gizmo, gismo, widget, doohickey, doojigger, gubbins, thingamabob, thingumabob, thingmabob, thingummy, whatchamacallum, whatsis, thingmajig, doodad, thingamajig, thingumajig, gimmick have the same meaning as 'whatchamacallit'
'whatchamacallit' can be a type of stuff.