(obsolete) Menstrual.

Like a block in shape or nature; coming across as a block. / Lacking understanding; stupid; obtuse; dull. / Rude; clumsy; rough.

Used less than normal or desirable.

(uncountable) Initialism of Eastern Time (-5 hours to GMT). / (countable) Abbreviation of extraterrestrial. / (music, countable) Initialism of escape tone.