grenade

[gri-neyd]
noun
1.
a small shell containing an explosive and thrown by hand or fired from a rifle or launching device.
2.
a similar missile containing a chemical, as for dispersing tear gas or fire-extinguishing substances.
verb (used with object), grenaded, grenading.
3.
to attack with a grenade or grenades.

Origin:
1525–35; < French < Spanish granada pomegranate, special use of granado having grains < Latin grānātus. See grain, -ate1

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World English Dictionary
grenade (ɡrɪˈneɪd)
 
n
1.  a small container filled with explosive thrown by hand or fired from a rifle
2.  a sealed glass vessel that is thrown and shatters to release chemicals, such as tear gas or a fire extinguishing agent
 
[C16: from French, from Spanish granada pomegranate, from Late Latin grānāta, from Latin grānātus seedy; see grain]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

grenade
"small explosive shell," 1591, from M.Fr. grenade "pomegranate," from O.Fr. pomegrenate (infl. by Sp. granada), so called because the many-seeded fruit suggested the powder-filled, fragmenting bomb, or from similarities of shape. Grenadiers (1676) originally were soldiers "who were dexterous in flinging
hand-granados" [Evelyn], from Fr. grenadier; later "the tallest and finest men in the regiment."
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
He was trying to fire a rocket-propelled grenade from a shoulder mount, but it
  kept slipping off his shoulder.
One of the kids on our street lost both hands, up to his elbows, dismantling a
  grenade.
When the grenade went off, it blinded the family dog.
The first rocket-propelled grenade blew the right rear door off.
Synonyms
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