Synonym: beat, drill, pound, reiterate, repeat, strike, tap. Similar words: drug, drudgery, forum, rumor, decorum, spectrum, instrument. Meaning: [drʌm] 
n. 1. a musical percussion instrument; usually consists of a hollow cylinder with a membrane stretched across each end 2. the sound of a drum 3. a bulging cylindrical shape; hollow with flat ends 4. a cylindrical metal container used for shipping or storage of liquids 5. a hollow cast-iron cylinder attached to the wheel that forms part of the brakes 6. small to medium-sized bottom-dwelling food and game fishes of shallow coastal and fresh waters that make a drumming noise. v. 1. make a rhythmic sound 2. play a percussion instrument 3. study intensively, as before an exam.
n. 1. a musical percussion instrument; usually consists of a hollow cylinder with a membrane stretched across each end 2. the sound of a drum 3. a bulging cylindrical shape; hollow with flat ends 4. a cylindrical metal container used for shipping or storage of liquids 5. a hollow cast-iron cylinder attached to the wheel that forms part of the brakes 6. small to medium-sized bottom-dwelling food and game fishes of shallow coastal and fresh waters that make a drumming noise. v. 1. make a rhythmic sound 2. play a percussion instrument 3. study intensively, as before an exam. 
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151. In this paper, the design of curve of grooved drum is researched, which deduced two types of circular cone curves analytic formula of grooved drum.
152. Leather grinding machine to undertake major repairs, Screed drum machine and machine Screed Huixiu.
153. A long drum , bongo close square yuan contributory goods and materials.
154. The drum is rotated at 20 revolutions per minute for 10 minutes.
155. The sliced tape application and conveying device was improved, and automatic sliced tape application and conveying was carried out by a mechanism comprising cam, grooved drum, and gears.