Throughout their series, the Blackhawks used the word ‘heavy’ 31 times to describe the Golden Knights in press conferences.
“They’re a heavy team, they’re heavy on the puck. They make it really tough for you to take the puck off them.”-Jonathan Toews, CHI captain
— Jason R. Pothier (@JRPothier) August 19, 2020

Blackhawks captain Jonathon Toews uses “heavy” to describe two things. Vegas’ size, and their ability to hold the puck once they possess it. It’s no secret, the Golden Knights are big and most of their players are hard to bump off the puck. Which was apparent right from the start of the series.
Mark Stone is 6’4″, 219 pounds but also has the puck super glued on his stick. Alex Tuch is 6’4″ as well, and his skill, speed, and size make it difficult for a defender to strip the puck. Max Pacioretty is 6’2, with the lethal combination of power and a rocket shot. These are examples of being a heavy team, and playing like one.
They play a different game then the Oilers. They’re a very structured, simple team. They play a heavy game. You got to tip your hat sometimes, they play well as a squad. -Calvin de Haan, CHI Defenseman
Blackhawks defenseman Calvin de Haan used the word to describe differences between the Golden Knights and a faster, skill-based team like the Edmonton Oilers. Edmonton has Connor McDavid, but what they didn’t have was the team structure and physicality Vegas has. The Golden Knights get scoring from multiple players, not just two, they defend, and rarely veer from their gameplan.
We know they’re an excellent team. They’re a heavy team, they get on the forcheck and try and hold you down… We gave them some easy ones, easy chances. They score 3-1 and during that stretch we just weren’t very good.-Jeremy Colliton, CHI coach
Chicago coach Jeremy Colliton called the Golden Knights a heavy team after three of the five games. Again, it wasn’t just their size, it was Vegas’ forecheck. When the Golden Knights push the puck with pressure they make teams feel like they’re being weighed down. All twelve forwards have that ability allowing Vegas the fortune to use all four lines.
Then there’s the natural use of the word.