Of middle rank, state, size, or quality; about equally distant from the extremes; medium; moderate; mediocre; ordinary.

of no exceptional quality or ability; "a novel of average merit"; "only a fair performance of the sonata"; "in fair health"; "the caliber of the students has gone from mediocre to above average"; "the performance was middling at best"

to a moderately sufficient extent or degree; "the shoes are priced reasonably"; "he is fairly clever with computers"; "they lived comfortably within reason"

any commodity of intermediate quality or size (especially when coarse particles of ground wheat are mixed with bran)

the middle of a side of meat, especially salt pork or bacon, some times called middling bacon or side meat.

Betting on both teams in a game at different point spreads, in the hope that the final score comes in between so that both bets can be won.

That part of the product of a concentrating table, or preparation plant which is neither clean gold/mineral nor reject.