a person whose job is to officially test or examine someone or something, especially to check knowledge or skill in an examination.
The examiner walked around the room while students wrote their tests.
Our math examiner gave us extra time because of a fire alarm.
✦ From late Middle English examyner, examiner, from Anglo-Norman French examynour, examinator, from Latin exāminātor (‘one who examines’), from exāminō (‘to examine’).
a person who works underground digging for coal, metal ores, or other valuable minerals
The miner swung his pickaxe against the rock wall deep in the tunnel.
Many miners in the town lost their jobs when the pit closed.
✦ From Middle English miner, myner, equivalent to mine + -er (agent noun suffix).
a person or computer that performs intensive calculations to verify cryptocurrency transactions and earn rewards
The miner upgraded his GPU to improve hashing power.
She runs a small miner farm in her garage.
✦ Modern computing term, metaphorical extension of mine (v.) + -er, referring to 'digging' for digital currency.
