دلّة – dallah
دلال – dilaal – plural

Metal pot with long curved spout for making Arabic coffee, traditionally used in Saudi Arabia.

@ vinod

I suppose the singular form of the word for "coffee pot" sounds like the past tense verb form "dalla" (he showed, he indicated).

@Desmond

The verb you mentioned is -
دلّ / يدُلّ على, إلى
dalla / yadullu
A Form I doubled verb with the root – د ل ل

The following words also have the same root -

دلّة – dallah – coffee pot
دلّال – dallaal – broker, middleman
دليل – daleel – guide
تدليل – tadleel – pampering – verbal noun of Form II
مدلَّل – mudallal – pampered – passive participle of Form II