Definitions
1.nounSomething of intermediate or average size, position, or quality.
2.adjectiveOf intermediate or average size, position, or quality; mediocre."The football team is never the worst or best in its league; its position is always middling."
3.adjectiveIn fairly good health.
4.adverbFairly, moderately, somewhat.
5.adverbNot too badly, with modest success.