Only asymmetrical tetromino (3)
I believe the answer is:
ell
(Other definitions for ell that I've seen before include "Old cloth measure" , "Old textile measure" , "Extension" , "Old measure of length about 45 inches" , "Length of cloth" .)
I believe the answer is:
ell
(Other definitions for ell that I've seen before include "Old cloth measure" , "Old textile measure" , "Extension" , "Old measure of length about 45 inches" , "Length of cloth" .)