l-mell [adverb], [adjective] [dated] - (in a way which is) very fast and not organizedAt the sound of the alarm bell, the customers ran pell-mell for the doors.There has been a pell-mell dash to buy shares in the new company.
PEL
Meaning of PEL in English
Cambridge English vocab. Кембриджский английский словарь. 2012