Real Dictionary

flip flop in Electrical Engineering
noun: A flip flop is a memory device that is used in digital equipment to store a one or a zero as a bit of memory.

flip-flop
plural noun: Flip-flops are open shoes which are held on your feet by a strap that goes between your toes.
verb: If you say that someone, especially a politician, flip-flops on a decision, you are critical of them because they change their decision, so that they do or think the opposite.

flip-flop in American English
an acrobatic spring backward from the feet to the hands and back to the feet
to do a flip-flop
adverb: with repeated sounds and motions, as of something flapping
intransitive verb: to make a sudden or unexpected reversal, as of direction, belief, attitude, or policy
noun: a sudden or unexpected reversal, as of direction, belief, attitude, or policy

flip-flop in British English
adverb: with repeated flappings
noun: a backward handspring
verb: to make a complete change of opinion, policy, etc