7
Grum, A weird looking rat thing that crawls around.
"Whoa dude look at that grum scittering around"
by grum guy March 11, 2021
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8
A guitar drum.

Guitar + Drum = grum
When a guitarists uses the base of their guitar to make percussion like sounds. This is then refered to banging the grum.
by Guy Cruz November 11, 2005
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9
The coolest city in Sweden. Famus people growed up in Grums:
Benny Körv, Tord Kråka, Johan Pingvin, Glidar Roger, Kodda, Den långe Jugoslavien, Peter Fetus and Tomas Hellström.
Hey, Benny Körv, Tord Kråka, Johan Pingvin, Glidar Roger, Kodda, Den långe Jugoslavien, Peter Fetus and Tomas Hellström, lets go to Grumspuben.

Damn, Grums is a cool place!
by KGB Jr. July 23, 2004
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11
The white pasty dicharge found on the labia of an arroused vagina
after fingering her, my hang was covered in grum
by bucksatan March 25, 2005
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12
Someone who is petty and always difficult. They also always play the victim.
Someone who is grum will sometimes act innocent and will almost always play the victim.
Wilbert: God she is so grum

Scarlet: I know right !
via giphy
by Too_relatable.1 April 18, 2020
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13
Shitty, particularly when talking about weather. Can also be used to talk about circumstances.
This weather is grum as fuck. This is a grum ass time.
by Tha Rambis November 14, 2012
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