Tester
Tester , noun
[Old English testere a headpiece, helmet, Old French testiere, French têtière a head covering, from Old French teste the head, French tête, from Latin testa an earthen pot, the skull. See Test a cupel, and compare Testière.]
1.
A headpiece; a helmet. [Obsolete]
The shields bright, testers, and trappures.
2.
A flat canopy, as over a pulpit or tomb. — Oxf. Gross
3.
A canopy over a bed, supported by the bedposts.
No testers to the bed, and the saddles and portmanteaus heaped on me to keep off the cold.
Tester , noun
[For testern, teston, from French teston, from Old French teste the head, the head of the king being impressed upon the coin. See Tester a covering, and compare Testone, Testoon.]
An old French silver coin, originally of the value of about eighteen pence, subsequently reduced to ninepence, and later to sixpence, sterling. Hence, in modern English slang, a sixpence; -- often contracted to tizzy. Called also teston. — Shakespeare