hum (n.)

  1. the state of being or appearing to be actively engaged in an activity; they manifested all the busyness of a pack of beavers; there is a constant hum of military preparation

    [ Syn: busyness ]

  2. an Islamic fundamentalist group in Pakistan that fought the Soviet Union in Afghanistan in the 1980s; now operates as a terrorist organization primarily in Kashmir and seeks Kashmirs accession by Pakistan

    [ Syn: harkat-ul-mujahidin , hum , harkat ul-ansar , hua , harkat ul-mujahedeen , al faran , movement of holy warriors ]

  3. a humming noise; the hum of distant traffic

    [ Syn: humming ]

    hum (v.)

  1. sing with closed lips; She hummed a melody'

  2. be noisy with activity; This office is buzzing with activity

    [ Syn: buzz , seethe ]

  3. sound with a monotonous hum

    [ Syn: thrum ]

  4. make a low continuous sound; The refrigerator is humming'

The dictionary is based on the WordNet Electronic Lexical Database.
WordNet 3.0 Copyright 2011 by Princeton University. All rights reserved.