dumdum

As a noun dumdum

is a bullet, with a soft nose, that expands upon impact to cause a gaping wound or dumdum can be an ignorant person, an idiot.

As an adjective undefined is

lacking a definition or value.

As a noun dumdum

is a bullet, with a soft nose, that expands upon impact to cause a gaping wound.

As an adjective dumb is

unable to speak; lacking power of speech.

As a verb dumb is

to silence.

As nouns the difference between lollipop and dumdum

is that lollipop is an item of confectionery consisting of a piece of candy/sweet attached to a stick while dumdum is a bullet, with a soft nose, that expands upon impact to cause a gaping wound.

As nouns the difference between rumdum and dumdum

is that rumdum is (slang) an habitual drunkard; a stupid person while dumdum is a bullet, with a soft nose, that expands upon impact to cause a gaping wound or dumdum can be an ignorant person, an idiot.

As an adjective rumdum

is (slang) dulled]] or [[incapacitate|incapacitated by alcohol; unconscious; stupid.

As nouns the difference between durdum and dumdum

is that durdum is (archaic) noise, uproar, clamor while dumdum is a bullet, with a soft nose, that expands upon impact to cause a gaping wound or dumdum can be an ignorant person, an idiot.