Pronunciation : Thud
Part of Speech : n.
Etymology : [Cf. AS. a whirlwind, violent wind, or E. thump.]
Definition : Defn: A dull sound without resonance, like that produced by striking with, or striking against, some comparatively soft substance; also, the stroke or blow producing such sound; as, the thrud of a cannon ball striking the earth. At every new thud of the blast, a sob arose. Jeffrey. At intervals there came some tremendous thud on the side of the steamer. C. Mackay.
Source : Webster's Unabridged Dictionary, 1913