The barred lambda ƛ, (in Unicode U+019B ƛ LATIN SMALL LETTER LAMBDA WITH STROKE (HTML
ƛ)), also called running man, is a modified letter of the Greek alphabet used in Americanist phonetic notation to transcribe [t͡ɬ]. It was introduced in American Anthropologist in 1934:
It is also commonly used to represent this phoneme in several languages of the Caucasus. A barred lambda is used in transcribing Sahaptin, e.g., iƛúpna ‘he jumped’. It occurs there less frequently than its ejective counterpart, e.g., iƛ’úna ‘he guessed right (in the bone game)’.
-  (strictly speaking, this refers to the glottalized version, [t͡ɬʼ])
- Herzog, George; Newman, Stanley S.; Sapir, Edward; Swadesh, Mary Haas; Swadesh, Morris; Voegelin, Charles F. (Oct–Dec 1934). "Some orthographic recommendations". American Anthropologist. 36 (4): 629–631. doi:10.1525/aa.1934.36.4.02a00300.