This is the 12001st most frequent Polish word.
lawiną
"Lawiną" means "avalanche" in English.
Here, 'lawiną' literally means 'an avalanche,' but it is used metaphorically to describe the large and overwhelming flow of messages.
Wiadomości napływają do nas lawiną.
Messages are coming to us in an avalanche.
In this context, 'lawiną' refers directly to the natural disaster, an avalanche of snow.
Zaszło osunięcie śniegu przyczyniające się do lawiną.
A snow slide occurred contributing to an avalanche.
Here, 'lawiną' is again used metaphorically to describe a rapid and overwhelming sequence of ideas.