1. To collide with someone or something after turning or veering quickly, sharply, or abruptly to one side. I turned the corner and swerved into the principal, knocking her briefcase right out of his hands. The car lost control and swerved into a lamppost.

2. To enter into something after turning or veering quickly, sharply, or abruptly to one side. The truck swerved into my lane to avoid hitting the pedestrian on the road. I swerved into a side alley to avoid the police.

3. To become involved with or begin working in some different field, industry, area of expertise, etc., especially very suddenly or abruptly. I actually started out as a family photographer, but I swerved into doing headshots after getting into a conversation with a couple of actors at a party a couple years back. The heavy metal band started swerving into a more pop-rock sound in the early 2000s.