Lapse

1. n. A fall or apostasy.
2. n. A gliding, slipping, or gradual falling; an unobserved or imperceptible progress or passing away,; — restricted usually to immaterial things, or to figurative uses.
3. n. A slip; an error; a fault; a failing in duty; a slight deviation from truth or rectitude.
4. n. The termination of a right or privilege through neglect to exercise it within the limited time, or through failure of some contingency; hence, the devolution of a right or privilege.
5. v. i. To become ineffectual or void; to fall.
6. v. t. To let slip; to permit to devolve on another; to allow to pass.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.