I have checked the dictionary, "on the clock" means :
1) Working or getting paid
2) Of a taxi (and by extension, its driver), currently engaged to carry a passenger and having an active meter.
3) Currently displayed on a motor vehicle's speedometer or odometer .
I'm not sure which explanation fits the context best; seems to me "working" is a choice?
In the context, I feel like when Tony said " “We’re on the clock.” , he means "We don't have enough time/ the clock is ticking/ it's urgent".
Could anyone help me to understand what exactly did Tony want to express here: working or urgent? or something else?
Here is the sentence in the context:
“Shut it down, Dr. Selvig,” Tony said. He hovered near the machine, hoping Selvig wouldn’t notice the way his thrusters were hiccupping. He was having trouble maintaining consistent thrust.
“It’s too late!” Selvig cried. “She can’t be stopped now! She wants to show us something! A new universe.”
“Okay,” Tony said. Clearly Selvig was beyond reason.
Tony blasted the machine with his repulsors, but it was surrounded by a force field of some kind. The reflected energy knocked him back and also sent Selvig and his computer flying across the rooftop.
“The barrier is pure energy,” Jarvis said. “It’s unbreakable.”
“Yeah, I got that,” Tony said. “Plan B.” He saw Loki on the walkway that led from the landing pad into the penthouse.
“Sir, the Mark Seven is not ready for deployment,” Jarvis said.
“Then skip the bells and whistles,” Tony said. “We’re on the clock.” He sure couldn’t take on Loki and the Chitauri, whatever they were, in the suit he was wearing. It was barely hanging together.
The Avengers I