Top Definition
The team that will one day dominate the world just because they'll be the first team to ever win 20 superbowls in a row... which is called a super mega awesome gigantic Dynasty...
Aldo:/ guess what?
Fernando:/ what?
Aldo:/ The 49ers changed the pledge of allegiance!
Fernando:/ What!?! didnt they do that 15 times already!

by Danny Rodriguez August 30, 2006
A term in the Bay area that references the local football team (SF 49ers), except it applies to girls who think and act like they are 9s but in reality are just 4s.
Yo man peep that 49er over there, she think she all that but she is a whack!
by Walro509 May 04, 2011
1.Referring to people who hoped to find gold in the san francisco gold rush of 1849-1900.

2.Also a professional football team in san francisco.
1.49ers back then were trying to get gold

2.49ers now try to get championships
by mAGIK bUS April 23, 2005
A gold digging woman
Sherry is a 49ER she's always looking for sugar daddies.
by 32sixCubed February 03, 2009
A woman who is a 4/10 but thinks, because of her surroundings or other factors, thinks she is, in fact, a 9/10.
Dude, girls in San Francisco are generally unattractive which is why there are so many 49ers.
by hwrdprkns September 22, 2014
Male gold digger.
"Who's this wigger Kevin Federline?"
"Some corny ass 49er who was stupid enough to knock up Britney after she blew all her money and went crazy."
"And who's this scrub on the bench Kris Humphries?"
"You bite your tongue. You're talkin about the most soulless, ruthless 49er there ever was."
*sheds tear*
by Frank Whore April 02, 2014
An attractive person of the opposite sex that looks sexually appealing from the rear (9) and not so sexy from the front (4).
Person A: Dang, did you see that girl walking into the restaurant?
Person B: Yeah, she looks super hot. Let's wait for her to turn around!
Person A: Look! She turned around. Oh man... she looks good from the back but not from the front.
Person B: Yeah, she's definitely a 49er!
by BoltDizzle November 25, 2009
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