(1):

(n.) 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.

(2):

(n.) Any of numerous insects which, in the larval state, excavate galleries in the parenchyma of leaves. They are mostly minute moths and dipterous flies.

(3):

(n.) The chattering, or garrulous, honey eater of Australia (Myzantha garrula).