verb/a.bɔʁ.de/
to deal with; to tackle; to approach a problem, situation or topic; to broach a subject; to approach or meet somebody; to place side to side; to reach, especially with a boat; to attack, especially a ship: to board an enemy ship in order to capture it
“aborder un sujet sensible” — to broach a sensitive topic
From a- + bord + -er.