noun

• (music) A percussive musical instrument spanned with a thin covering on at least one end for striking, forming an acoustic chamber; a membranophone.
  "He's playing the piano and she's playing the drums!"
• (US) Synonym of construction barrel.
• (architecture) The encircling wall that supports a dome or cupola.
• (architecture) Any of the cylindrical blocks that make up the shaft of a pillar.

verb

• (intransitive) To beat a drum.
• (ambitransitive) To beat with a rapid succession of strokes.
  "The ruffed grouse drums with his wings."
• (transitive) To drill or review in an attempt to establish memorization.
  "He’s still trying to drum Spanish verb conjugations into my head."

noun

• (now rare) A small hill or ridge of hills.

noun

• (now historical) A social gathering or assembly held in the evening.
  "Another misfortune which befel poor Sophia, was the company of Lord Fellamar, whom she met at the opera, and who attended her to the drum."
• (slang, chiefly UK) A person's home; a house or other building, especially when insalubrious; a tavern, a brothel.