1.
one level; one step; one tier
A single step or level in a staircase, hierarchy, or gradation.
一段 has multiple uses.
Common patterns
In Japanese grammar, 一段動詞 (ichidan verbs) are verbs whose stems end in the same sound before conjugation (e.g., 食べる, 見る).
Martial arts
段 is a rank in martial arts like 柔道, 剣道, 空手. 一段 (first dan) is typically the first black belt level.
Adverbial use
一段と means "even more" or "to a greater degree," emphasizing an increase or improvement.
Related Words
Homophone:
一団 (a group)