As a numeral sis
is six.
As a noun bra is
captive, hostage.
sis
English
Initialism
(Initialism)
(head)
(British)
Synonyms
*
* Secret Intelligence Service
See also
* GCHQ
*
* SAS
* SBS
Anagrams
*
* bra
English
Etymology 1
Shortened from brassiere.
Noun
(
Brassiere)
(
en noun)
a brassiere
Derived terms
* maternity bra
* nursing bra
* peek-a-boo bra
* push-up bra
* sports bra
* training bra
* underwired bra
Etymology 2
From bracket
Noun
(
en noun)
(physics) One of the two vectors in the standard notation for describing quantum states in quantum mechanics, the other being the ket .
Related terms
* bra-ket notation
Antonyms
* ket
Etymology 3
Representing a different pronunciation of bro , meaning brother
Noun
(
en noun)
(slang) friend
- Take it easy, bra !
(slang) female version of bro
