An older middle-aged woman who works at Target and has a shirt that's obviously too small for her because the split on the side of her work shirt exposes her belly. She is often seen with glasses and yelling at her fellow employees.

Ask anyone at Target about her and they all roll their eyes in disgust.
Person 1: "Look at that woman yelling at all the employees! The one with the glasses!"
Person 2: "Dude, that's Merle. Look at her shirt! You can see her stomach!"
Person 1: "Phooorra! She doesn't look like a pleasant person to be around."
by Bolladonk-adonk November 29, 2009
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Other word for merman. A man with a fish-type body from the waist downwards.
Plural: Merlings/mermen.
The word is used sometimes in the "a song of ice and fire" book series from G.R.R. Martin.
"Wow that guy swims like a boss!".
"Lol, prolly a merling."
by ReiniFtw April 14, 2013
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Half man, half girl. Can drink as much as a college boy, but still has female sex appeal. The most notorious MERL, rumoured to be named 'Noor', attends the University of Colorado at Boulder and can be spotted at the bars on a daily basis on the prowl. Though there is no actual documentation of this MERL, many have claimed to have spotted her on several occasions. Use caution in the presence of a MERL.
"God I love being half man, half girl"
"MERL, you probably shouldn't say that in public anymore"

"MERL you are the coolest 'guy' in the house"

by cupcake16 January 21, 2009
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Merl is a Content Creator from the UK who is known for streaming Fortnite on Twitch.

He currently has over 100,000 subscribers on YouTube!
Hey look! Merl posted a new video!
by FortniteBR January 16, 2021
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A term used as an insult.
Somewhat like the word jerk.

Guy: "Hey, you wanna go get laid?"
Girl: "No, you're such a merl!"
by Erika Elite Tx March 16, 2008
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When a dog or cat is sitting and they raise their hind legs so that their anus is in direct contact with the carpet and then use their front legs to drag their ass around. Sometimes it leaves a stain.
Fido just merled a nasty stripe on your mom's new carpet.

The cat is merling at least a dozen times a day, it may be time to hit it with a shovel.
by mcgillicutty April 5, 2003
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A polite way of calling someone haggard. Based on the name of country music icon Merle Haggard.
"It's Monday and this bar is full of merles, we should have a good chance of going home with someone tonight."

by mc oroville December 1, 2005
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