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1. Take apart into its constituent pieces
   - disassemble, take apart, break up, break apart
    
2. Destroy (a building or buildings) so as to make nearly level the ground
   "When a force occupies an enemy fortress, it may dismantle the fortifications";
   - level, raze, rase, tear down, take down, pull down, flatten
    
3. [archaic] Take off or remove
   - strip

Derived forms: dismantled, dismantling, dismantles

Type of: destroy, destruct, remove, spifflicate [Brit, informal], spiflicate [Brit, informal], take, take away, uncreate [literary], withdraw