This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. Plural form of trousseau.

"To help support the family, Magnin opened a small store and began sewing and selling lace-trimmed baby clothes, lingerie, and bridal trousseaux, an art she had learned from her mother."