懂门儿

Traditional form:

懂門兒

Pinyin (reading):

dǒngménr

Definitions:

• one who knows his business
• professional
• expert
• au fait

Characters:

• 懂 - to understand, to know
• 门 - gate, door, entrance, opening
• 儿 - son, child

Traditional characters:

• 懂 - to understand, to know
• 門 - gate, door, entrance, opening
• 兒 - son, child