an obstruction that stands in the way (and must be removed or surmounted or circumvented)
something immaterial that stands in the way and must be circumvented or surmounted; "lack of imagination is an obstacle to one's advancement"; "the poverty of a district is an obstacle to good education"; "the filibuster was a major obstruction to the success of their plan"
a member of the British order of honor; ranks below a baron but above a knight; "since he was a baronet he had to be addressed as Sir Henry Jones, Bart."
impossible or difficult to perceive by the mind or senses; "an imperceptible drop in temperature"; "an imperceptible nod"; "color is unperceivable to the touch"
make known to the public information that was previously known only to a few people or that was meant to be kept a secret; "The auction house would not disclose the price at which the van Gogh had sold"; "The actress won't reveal how old she is"; "bring out the truth"; "he broke the news to her"; "unwrap the evidence in the murder case"
remove the outer cover or wrapping of; "Let's unwrap the gifts!"; "undo the parcel"
any of various more-or-less horizontal spars or poles used to extend the foot of a sail or for handling cargo or in mooring
a pole carrying an overhead microphone projected over a film or tv set
a deep prolonged loud noise
a sudden happening that brings good fortune (as a sudden opportunity to make money); "the demand for testing has created a boom for those unregulated laboratories where boxes of specimen jars are processed like an assembly line"
a state of economic prosperity
grow stronger; "The economy was booming"
make a deep hollow sound; "Her voice booms out the words of the song"
make a resonant sound, like artillery; "His deep voice boomed through the hall"
the economic and political theories of Karl Marx and Friedrich Engels that hold that human actions and institutions are economically determined and that class struggle is needed to create historical change and that capitalism will ultimately be superseded by communism