The pearl oyster.

In a peaceable manner.

Any of several bivalve molluscs that are a source of pearls, but especially Pinctada margaritifera.

(grammar) A participle, prominent in some languages (e.g. Latin, Greek) but less common in English, describing something that happened to a noun (the subject) in the past.

plural of perfect passive participle

The 45-year reign of Emperor Meiji (1868-1912). During this time, Japan started its modernization and rose to world power status.

(idiomatic) A length of time during which rules or penalties are waived or deferred.

In Latin, the three perfect tenses: perfect, future perfect, and pluperfect or past perfect, as contrasted with the present system: present, future, and imperfect. A verb in the perfect system indicates an action that has completed.

Alternative form of pepper spray

Alternative form of pepper spray