Wiktionary
vb. (context idiomatic English) To rant or shout in order to relieve stress; to vent.
Usage examples of "blow off steam".
But she held her tongue, figuring it was best to just let Macklin blow off steam.
They're wild and arrogant, and they need to blow off steam, typically with booze and women and dumb stunts.
Frau Hufnagel doesn't grasp anything at all, but does the right thing: presuming the intruder in her fragile Christmas room to be a slave laborer from the East, now masterless, she holds out, with bravely trembling hands, the brand-new immersion heater, expecting the brute to blow off steam by demolishing this household utensil.
A bit of argument helped to blow off steam, helped to keep everyone's nerves from growing wire-tight before the battle.
Right now Mara Jade was just showing off--and he decided to let her blow off steam.
I say let them bootjack fares at the cabstand and blow off steam with booze and whores.
Their informal leader, a burly creature called Boulder, had given Capo some trouble in the past with his rebellious ways, and Capo had been happy to see him go: Let him blow off steam, make a few mistakes, even get hurt, and he would soon defer to Capo's authority once more.
Memu Bay was bad enough when he was allowed to get out and blow off steam every few days.
As an ensign, I didn't realize he was as torn up about that mess as I was, but he let me blow off steam and then sleep it off.
Mesplede is staging weekly Cong-ARVN boxing matches (slave cornermen & referees) which helps blow off steam & boosts morale.