left turn

Meanings

1. An unexpected change from the way things seemed to be going.
2. Used other than figuratively or idiomatically: see left, turn.

1. A command to a soldier or other person who is marching: turn ninety degrees to your left!

1. To turn ninety degrees to one's left, especially in response to a military command while marching.

Etymology

The noun is derived from left (adjective) + turn (noun). The interjection is derived from left (adverb) + turn (verb), while the verb is derived from the interjection.