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blocker

A blocker is a problem or obstacle that prevents work on a task, activity, or project from progressing until it is removed or resolved.

In plain English

It is something in the way that stops people moving forward on a piece of work. Progress cannot continue on that task, activity, or project until the issue is removed or resolved.

In context

In a handoff thread, blocker names the problem or obstacle that is preventing the work from progressing.

Situation
Collaborating remotely through projects, tasks, meetings, handoffs, and approvals
What it communicates
names the issue stopping progress in a handoff thread

Meaning limits

The term by itself does not say how serious the problem is or who will resolve it.

Examples

“The missing approval was a blocker for the report, and the team could not continue until it arrived.”

Core meaning

“She logged the missing figures as a blocker in the handoff thread after the draft stalled.”

In context