flak in English:

I have a flat tyre.

I couldn't drive any further because of a flat tyre

We couldn’t leave, until we pumped up the flat tyre.

If you get a flat tyre you cant drive.

We just had to sit there and ride through the flak.

take flak

He typically gets some flak from over there, I would expect.

The puncture wound was very deep and had to be examined for infection.

We had a puncture on the motorway.

puncture repair kit

On the way home we had a puncture.

We had a puncture on the way and arrived late.

‘Can that thing get a puncture?’

I got a puncture

There is a puncture in the rubber glove

My gut feeling is that Tom won't show up tomorrow.

The hunters shot the elk then gutted and dressed it.

That exercise was a gut.

I'm going to slug you in the gut.

Years of heavy drinking has left John with a beer gut.

He took out the guts of the animal.

When we got home, my grandma scaled and gutted the fish we had caught

I am so angry, I could punch someone in the face, and then in the gut.

I have a gut feeling that the relationship won't last. I went with my gut and chose Sarah to lead the team.

Your gut task is to ice that guy.

My gut is aching.

but that feeling in your gut that it doesn't make sense

In order to remodel the house, we must first gut it and throw away all the old fixtures

It can take 72 hours for food to pass through the gut.

I've developed a bit of a gut lately, so I've decided that, starting tomorrow, I'm going to go to the gym.

building in some slack

It is important that no one is allowed to slack off on their assigned work.

We tend to slack off after many hours of hard work.

I thank my sons for their tireless work on behalf of the campaign, and thank their wives and children — (cheers, applause) — for taking up their slack as their husbands and dads have spent so many weeks away from home.

‘a slack rope’, ‘business was rather slack’, ‘they were working at a slack pace’

He grabbed the slack and pulled down the rope.

Sales figures for this month have been rather slack.

security is very slack here

slack discipline, slack worker

Lots of teens are slack students. And summertime is a major slack.

There's a huge slack in that system; with the right pricing we can undo that. - system z wadami

These ​tent ​ropes are too slack - they need ​tightening

Can't cut you any slack for it, though.

Adjustments of the front seat might bring slack in the anchor belts; tighten the anchor belts again.

Cut him some slack, John. It's his first day on the job.