1. a field of work or profession; one's trade or occupation
Usage: often used to describe a person's specialty or area of expertise
2. something in which one excels; a strong suit
Usage: often used in the phrase 'not one's metier' to indicate something is not one's strength

Examples

• Teaching has been her metier for over twenty years.
• Writing fiction is not really his metier; he prefers poetry.
• Carpentry is a traditional metier that requires years of training.
• Her metier is graphic design, and she excels at it.
• Public speaking is definitely not my metier.
• He found his metier in software development.
• Cooking became her metier after she attended culinary school.