IPA: /ˈkoʊˌkaʊnsl/
KK: /kəˈkaʊnsl/
A person or group that provides legal advice or representation alongside another counsel.
The two lawyers acted as cocounsels in the case, sharing their expertise.
Cocounsel → It is formed from "co-" (meaning together) and "counsel" (from Latin "consilium", meaning advice or consultation). The word "cocounsel" refers to the act of providing counsel or advice together with another person.
Think of two people giving advice "together" ('co-') — that's what cocounsel means.