room·ful 
/ˈru:mfəl/ noun
plural room·fuls /ˈru:mfəl/ noun /ˈru:mfəlz/ also rooms·ful /ˈru:mzfəl/ [count] : the amount of people or things that are in a room — usually + of ▪ a roomful of strangers ▪ A roomful of wiring and circuits can now be reduced to a tiny computer chip.
