Resembling or having the qualities of a drum; making a hollow, resonant sound like a drum.
From 'drum' + '-y' (adjective suffix), a simple formation meaning 'having drum-like qualities,' used since the 18th century.
When you tap on a hollow tree trunk and it makes that deep 'boom' sound, you're hearing something drummy—it's the same principle that makes drums such perfect instruments for carrying sound across distances!
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