RR
USRR (TRAIN)
written abbreviation for railroad noun
Thesaurus: synonyms and related words
Railways & railway lines
- Amtrak
- artery
- buffer
- cable railway
- funicular
- grade crossing
- junction
- light railway
- metro
- monorail
- narrow-gauge
- point
- railroad
- railroad tie
- rapid-transit
- signal
- subway
- switch
- switchback
- track
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RR (POST)
written abbreviation for rural route: used in addresses in some areas in the US
Thesaurus: synonyms and related words
Communications - the postal system
- certified mail
- consign
- direct mail
- express
- letterbox
- mail slot
- mailbag
- mass mailing
- p. and p.
- pillar box
- pin code
- PO
- postmaster
- shipping and handling
- snail mail
- stamp
- surface mail
- window
- zip code
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You can also find related words, phrases, and synonyms in the topics:
Roads & routes in general
RR (BREATHING)
specialized medical written abbreviation for respiratory rate (= the rate at which someone breathes in and out)
Thesaurus: synonyms and related words
Animal physiology: breathing & stopping breathing
- aerobic respiration
- anaerobic
- asphyxia
- breathable
- breathe
- breathing
- breathless
- gasp
- heave
- huff
- intake
- respiration
- respiratory
- sigh
- sleep apnoea
- strangle
- strangulate
- suffocate
- suffocating
- winded
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