(nautical, historical) Rum diluted with six measures of water instead of the normal three, formerly used as a disciplinary measure for sailors.

plural of Schläfli double six

plural of six-yard box

plural of six penny nail

plural of six-penny nail

(US, travel) The official Customs and Border Protection list of countries whose citizens do not require six months' validity on their passport on arrival in the United States.

(idiomatic) In a state of confusion. / Used other than figuratively or idiomatically: see all, sixes, and, nines.

(Ireland, informal) The twenty-six counties that form the Republic of Ireland.

(Malaysia, Singapore, Singlish, colloquial) Careless; shoddy. / (Malaysia, Singapore, Singlish, colloquial) Incompetent.

Alternative form of hit someone for six.