0 to finally agree to what someone wants, after refusing for a period of time: --
He nagged me so much for a new bike that eventually I gave in.
The government cannot be seen as giving in to terrorists' demands.
1 to accept that you have been defeated and agree to stop competing or fighting: --
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Можем да го завършим стъпка по стъпка, колкото и дълъг да е пътят и не може да бъде завършен, колкото и кратък да е пътят, ако дори не маркирате отпечатъка си.