An ink, invisible on application or soon thereafter, that can later be rendered visible by some process, such as exposing it to heat. / An ink used in pranks that is visible at first but soon disappears.

plural of co-mother-in-law

plural of co-brother-in-law

plural of co-sibling-in-law

plural of co-in-law

plural of co-sister-in-law

(idiomatic) Something that may lead to gain, depending on the outcome; a position for which to campaign or cheer. / Used other than figuratively or idiomatically: see dog, hunt.

(engineering) A point on an engineering drawing that has been added to make the layout of the part easier. It is usually the intersection of the tangent lines of a curve.

(informal, humorous) Frightening imagined creatures; ghosts or other supernatural beings.

(idiomatic, colloquial) Used to express the speaker's belief that a preceding statement expressed a desired rather than an actual state of affairs.