tester 1
/tes"teuhr/ , n.
a person or thing that tests.
[ 1655-65; TEST 1 + -ER 1 ]
tester 2
/tes"teuhr, tees"-/ , n.
a canopy, as over a bed or altar.
[ 1350-1400; ME testrum canopy of a bed; akin to L testa covering. See TEST 2 ]
tester 3
/tes"teuhr/ , n.
the teston of Henry VIII.
[ 1540-50; earlier testorn, var. of TESTON, with -r- from MF testart teston ]