Definition: To persuade someone or make someone certain; cause (someone) to believe firmly in the truth of something.
A directional verb (inflection), meaning CONVINCE-ME ("convince me").
Meaning: CONVINCE-ME successfully after a hard attempt or several attempts.Related signs: PERSUADE.
Gloss: lawyer[t] ix-ref knack argue convince interj
English equivalent: The lawyer made a very convincing argument.
There are two different signs for the gloss "argue" or "argument". The other signed word is in sense of dispute or verbally fighting (as shown in the Handspeak's dictionary). It is a different context in the sentence above.