BTRL

Scrabble® Enable2K-Verified Anagrams
	Words containing the letters "b-l-r-t"
	+1 letter: blurt.
	+2 letters: belter, blurts, bolter, brulot, brutal, butler, labret, riblet, treble, trebly, tribal, trilby.
	+3 letters: battler, beetler, belters, blaster, blather, blatter, bleater, blether, blister, blither, bloater, blotter, blunter, blurted, blurter, bluster, bolster, bolters, borstal, bottler, brattle, bristle, bristly, bristol, brittle, brittly, brothel, brulots, brutely, butlers, butlery, butyral, butyryl, driblet, filbert, gilbert, halbert, labrets, lambert, liberty, librate, lobster, orbital, ratable, ratably, rebuilt, retable, riblets, stabler, strobil, subtler, tabular, temblor, tilbury, timbral, timbrel, tollbar, trebled, trebles, tremble, trembly, triable, trouble, tubular, tumbler, tumbrel, tumbril.
Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro.

Hexadecimal (or equivalents, 770AD-1900s) (references)

Leonardo da Vinci (1452-1519; backwards) (references)

American Sign Language (origins from 1620-1817 in Italy and, especially, France) (references)

⁼

Semaphore (1791, in France) (references)

Braille (1829, in France) (references)

Morse Code (1836) (references)

Dancing Men (Sir Arthur Conan Doyle, 1903) (references)

Binary Code (1918-1938, probably earlier) (references)

HTML Code (1990) (references)

ISO 10646 (1991-1993) (references)

British Sign Language (Fingerspelling, BSL; 1992, British Deaf Association Dictionary of British Sign Language) (references)

Encryption (beginner's substitution cypher): (references)

Domain	Definition
Computing	BTRL British Telecom Research Laboratories. Source: The Free On-line Dictionary of Computing.
Source: compiled by the editor from various references; see credits.

Specialty Definition: BTRL