Keywords: limit, limited, busy, engaged (busy)

Sign Definition

As a Noun

1. The greatest amount, extent, or degree of something that is possible or allowed. English = limit.

As a Verb or Adjective

1. Of an entity or process, to be unable to proceed any further and to reach the greatest amount, extent, or degree that is possible or allowed. English = (be) limited.
2. Of telecommunications (phones, TTYs, etc.), to be already in use, so you cannot communicate with the person you are trying to contact. English = (be) busy, (be) engaged.
3. Idiomatic English = unable to get through, unable to be put through.