Wiktionary
vb. 1 To reverse a vehicle from a confined space. 2 (context idiomatic English) To withdraw from something one has agreed to do. 3 (context idiomatic English) To dare someone to not withdraw from a challenge. 4 (context idiomatic English) A betting term from French hazard 5 (context idiomatic computing English) To undo a change.
WordNet
v. move out of a space backwards; "He backed out of the driveway"
make a retreat from an earlier commitment or activity; "We'll have to crawfish out from meeting with him"; "He backed out of his earlier promise"; "The aggressive investment company pulled in its horns" [syn: retreat, pull back, back away, crawfish, crawfish out, pull in one's horns, withdraw]
Usage examples of "back out".
He went right back out and grabbed another order, and came back to do it again.
We turned silently and strode back out as Johnny Squid and Geoff torched the buildings.
Then I drove my knee into his gonads hard enough to see them displace his eyeballs, which rolled back out of sight.
We took it all in as we played chase, until we stopped near another door to grope and kiss before heading back out into the public areas, giggling and grinning as we did so.
We drifted back out of the maze via another route, keeping up the chatter as cover.
She was stirring and excited, but I calmed her down with whispers and caresses of her head and spine, until she conked back out the way small children do.
As he slid back out, withdrawing until all but the tip of his cock had left her body, she clutched at him, trying to pull him closer.