open sight
— Noun
– English
~ rear gunsight having an open notch instead of a peephole or telescope
out of sight
— Adjective
– English
~ not accessible to view; "concealed (or hidden) damage"; "in stormy weather the stars are out of sight"
out of sight
— Adverb
– English
~ quietly in concealment; "he lay doggo"
out of sight
— Adverb
– English
~ no longer visible; "the ship disappeared behind the horizon and passed out of sight"
output signal
— Noun
– English
~ signal that comes out of an electronic system
order Siluriformes
— Noun
– English
~ an order of fish belonging to the superorder Malacopterygii including catfishes
original sin
— Noun
– English
~ a sin said to be inherited by all descendants of Adam; "Adam and Eve committed the original sin when they ate the forbidden fruit in the Garden of Eden"
order Sirenia
— Noun
– English
~ an animal order including: manatees; dugongs; Steller's sea cow
orphan site
— Noun
– English
~ a toxic waste area where the polluter could not be identified or the polluter refused to take action or pay for the cleanup