English to English

noun (n)

• a small earthquake

  sebuah gempa kecil

  Synonym:
  earth tremor, tremor
  

  source: wordnet30
• A feeble earth tremor not directly perceptible, but detected only by means of specially constructed apparatus.

  yang lemah gempa bumi langsung tidak nampak, tapi hanya dikesan melalui perkakas khusus dibangun.

  source: webster1913