lookdown

[ loo k-doun ]
/ ˈlʊkˌdaʊn /

noun

a silvery carangid fish of the genus Selene, of the Atlantic Ocean, having a compressed body and eyes placed high on the truncated forehead.

Origin of lookdown

1880–85, Americanism; noun use of verb phrase look down

Definition for lookdown (2 of 2)

look-down
[ loo k-doun ]
/ ˈlʊkˌdaʊn /

noun

the appearance of paper when inspected under reflected light.
Compare look-through.