1. (v) - a play on the phrase describing the method to start a lawnmower, a suck start is a blowjob begun while the dick is still flaccid but differs in that it does not continue until completion and that it's primary purpose is to assist in achieving an erection.
Similar to: pull start, fuck start, start from scratch
She wanted to get down so I told her, "Baby, you know this law mower is a suck start, so get to it."
What it is said that female porkers can do to large motorcycles.
Man, I'll be she can suck start a Harley!