Usage patterns
〈事〉を通しでするto do something in one continuous stretch, from start to finish
I watched this drama all the way through in one go.
お通しが出るfor an appetizer dish to be automatically served before ordering
As soon as we sat down at the izakaya, an appetizer was brought out.
〈時〉時間通しで〈動詞〉to do something continuously for a stretch of ... hours without a break
I studied for six hours straight.
お通しを断るto decline the automatically served appetizer
I was already full, so I turned down the appetizer.
Expressions
を通してthrough; throughout; by way of; via 立ち通しremain standing; keep standing all the way 働き通しでworking right on through; working nonstop