Pertaining to penance or penitence

a book or set of rules pertaining to the Christian sacrament of penance

The simultaneous sexual penetration of one or more orifices of one person by two other people.

(physics) Any pendulum having a period equal to that of a hypothetical pendulum whose length is equal to the Earth's radius (84.4 minutes); its arm will remain locally vertical when the pivot is moved and is therefore the basis of navigational instruments

(obsolete, Britain) Alternative form of pennyworth

(mathematics) Any function that applies constraints to a maximum or minimum problem

(informal) A tuxedo. / (historical) A kind of spacesuit worn by Soviet cosmonauts.

plural of penguin suit

Of or pertaining to penny ante poker. / Played for small stakes. / Trivial.

A small stake in gambling. / Poker played for small stakes. / A small-scale business transaction.