of offer-the act of an offerer; a proffering.-that which is offered, esp. in divine service; that which is presented as an expiation or atonement for sin, or as a free gift; a sacrifice; an oblation; as, sin offering.-a sum of money offered, as in church service; as, a missionary offering. specif.: (ch. of eng.) personal tithes payable according to custom, either at certain seasons as christmas or easter, or on certain occasions as marriages or christenings.