shirtfrontverb [ T ]
also shirt front /ˈʃɜːtˌfrʌnt//ˈʃɝːt-/Australian English informalto violently knock into someone's chest, especially in sport:
Brogan shirtfronted him rather than playing the ball.
to behave in a threatening way to someone:
Shortly after I joined the squadron, I was shirt fronted by a bad-tempered officer.
shirtfronting
noun [ U ] /-ɪŋ/Australian English informal
In Australian Rules football, a deliberate front-on collision is known as shirtfronting.