also: ありきぞめ
noun
baby's first steps; celebration of first steps
Refers to a baby's first walking steps or the traditional celebration of this milestone.
娘の歩き初めを家族で祝った。
We celebrated our daughter's first steps as a family.
新しい橋の歩き初め式が行われた。
A ceremony was held for the opening of the new bridge to pedestrians.
Compound of 歩き (walking) + 初め (first time). The reading ありきぞめ is an older form of あるきぞめ.