1. thrust out - push to thrust outward. obtrude, push out. push, force - move with force, "He pushed the table into a corner"

What does it mean to thrust forward?

To thrust is to push forward quickly and forcibly, like the way a pirate would plunge or thrust a sword into his enemy. Thrust is often used when you're talking about knives or swords or jabbing someone with something. In fact, a thrust refers to a sharp blow or stab.

What does thrust upon them mean?

: to force (someone) to have or accept (something) Fame was thrust upon her.