/umbiˈliko/

navel

/ˈumi/

to do something, perform some sort of action

/umiliˈono/

zillion, gazillion (unspecified large number)

a tool whose purpose is unspecified or dubious; gadget; thingamajig

/umˈlau̯to/

umlaut, a diacritic mark ( ¨ ) used in Germanic languages to indicate a back vowel becoming a front vowel.

/ˈumo/

something for which one does not know or cannot recall the name; a whatchamacallit, thingamabob, doohickey