BM

Abbreviation with 4 meanings

BM
Stands forBoatswain's Mate
Meanings4
CategoriesMilitary, Geography & Places, Texting & Internet Slang

BM has four meanings. The most common are Boatswain's Mate (US Navy and coast guard rating) and Bermuda (country code); it can also stand for Baby mama and Bad manners.

Meanings of BM at a glance

#BM stands forContext
1Boatswain's MateMilitary › US Navy and Coast Guard Rating
2BermudaGeography & Places › Country Code
3Baby mamaTexting & Internet Slang › Parenting Forum
4Bad mannersTexting & Internet Slang › Gaming Slang

1. Boatswain's Mate

Military · US Navy and Coast Guard Rating Abbreviations

Seamanship experts responsible for mooring, anchoring, rigging, small-boat operations, deck maintenance and underway replenishment. Senior boatswain's mates train the deck force, and in the Coast Guard BMs serve as coxswains and lead small-boat stations.

Example: BM2 Ruiz will be coxswain of the RHIB for this afternoon's boarding drill.

Pronounced "BO-sun's mate," and spelled bosun in informal writing. It is among the oldest Navy ratings, dating to the Continental Navy. The rating badge shows crossed anchors, and boatswain's mates traditionally pass orders over the general announcing system with the boatswain's pipe.

2. Bermuda

Geography & Places · Country Code Abbreviations

Bermuda, a British Overseas Territory about 1,000 kilometres east of North Carolina, is a global center for reinsurance and offshore companies. Hamilton is the capital, and BMU the alpha-3 code.

Example: The reinsurer's annual report gives Hamilton, BM as its registered office.

Bermuda shorts and the Bermuda Triangle take their names from the islands. The Bermudian dollar (BMD) is pegged one-to-one to the US dollar.

3. Baby mama

Texting & Internet Slang · Parenting Forum Abbreviations

Slang for the mother of one's child, typically when the parents are not in a relationship. Also used on stepfamily forums for a partner's child's mother, sometimes read as "biological mother."

Example: My BM and I finally agreed on a co-parenting schedule that works.

Comes from African American Vernacular English and became mainstream in the 2000s through music and TV. It can sound dismissive, so many co-parents prefer "my child's mother" or "co-parent." In other contexts BM means bowel movement, which medical and baby-care posts also use.

4. Bad manners

Texting & Internet Slang · Gaming Slang Abbreviations

Unsportsmanlike behavior in a match, such as spamming emotes after a kill, teabagging (crouching repeatedly over a defeated player), taunting in chat or dragging out a won game.

Example: Spamming laugh emotes after every kill is pure BM.

The term came from the Korean StarCraft scene, where "BM" described taunting moves that humiliated opponents. "BM" can be a verb ("stop BMing"). Some competitive players accept light BM as part of trash talk, but tournaments may penalize it. Unrelated to "BM" meaning "best man" or "bowel movement" in other contexts.

More US Navy and coast guard rating abbreviations

  • AO – Aviation Ordnanceman
  • AST – Aviation Survival Technician
  • AT – Aviation Electronics Technician
  • AW – Naval Aircrewman
  • BU – Builder
  • CE – Construction Electrician
  • CM – Construction Mechanic
  • CS – Culinary Specialist

See all 52 US Navy and coast guard rating abbreviations →

More country code abbreviations

  • BH – Bahrain
  • BI – Burundi
  • BJ – Benin
  • BL – Saint Barthélemy
  • BN – Brunei
  • BO – Bolivia
  • BQ – Caribbean Netherlands
  • BR – Brazil

See all 270 country code abbreviations →