The Collaborative International Dictionary of English v.0.48:
Miner \Min"er\, n. [Cf. F. mineur.]
1. One who mines; a digger for metals, etc.; one engaged in
the business of getting ore, coal, or precious stones, out
of the earth; one who digs military mines; as, armies have
sappers and miners.
(a) Any of numerous insects which, in the larval state,
excavate galleries in the parenchyma of leaves. They
are mostly minute moths and dipterous flies.
(b) The chattering, or garrulous, honey eater of Australia
Miner's elbow (Med.), a swelling on the black of the elbow
due to inflammation of the bursa over the olecranon; -- so
called because of frequent occurrence in miners.
Miner's inch, in hydraulic mining, the amount of water
flowing under a given pressure in a given time through a
hole one inch in diameter. It is a unit for measuring the
quantity of water supplied.