The action of accruing; = "accretion"; an instance of this; "right of accruer": the right to benefit from the action of accretion, especially in the context of shares under probate or trusts.
((n.) The act of accruing; accretion; as, title by accruer.)
Origin:
Mid 17th century. From accrue + -er, after nouns in the field of legal terminology with the ending -er derived from the infinitive forms of French verbs.