backswimmer
— Noun
– English
~ predaceous aquatic insect that swims on its back and may inflict painful bites
backsword
— Noun
– English
~ a stick used instead of a sword for fencing
backsword
— Noun
– English
~ a sword with only one cutting edge
backtalk
— Noun
– English
~ an impudent or insolent rejoinder; "don't give me any of your sass"
backtrack
— Verb
– English
~ retrace one's course; "The hikers got into a storm and had to turn back"
backup
— Noun
– English
~ a musical part (vocal or instrumental) that supports or provides background for other musical parts
backup
— Noun
– English
~ someone who takes the place of another (as when things get dangerous or difficult); "the star had a stand-in for dangerous scenes"; "we need extra employees for summer fill-ins"
backup
— Noun
– English
~ an accumulation caused by clogging or a stoppage; "a traffic backup on the main street"; "he discovered a backup in the toilet"