起工する start [begin] work [construction];〔土木工事で〕break ground ((for));〔造船で〕lay the keel
- 下水道工事を起工する
- begin work on a sewer system
- 起工式〔鍬入れ〕a ground-breaking ceremony;〔定礎〕the laying of a cornerstone, a cornerstone-laying ceremony;〔船の〕a keel laying, a keel-laying ceremony