Definition of service:

part of speech: noun

Labour, physical or mental, performed in course of duty, or for the benefit of another; obedience; religious rites or worship; public worship; employment; use; purpose; advantage; official duties of a clergyman; the performance of duty in the army or navy; a benefit conferred; a course, as of dishes at table; a collection of vessels used at table; among seamen, the layers of spun yarn fastened round a rope to protect it from friction.

Usage examples:

• There was quite time to call and ask if the Miss Wodehouses were going down to the service this afternoon; but was it duty? Mrs [Margaret] Oliphant in "The Perpetual Curate".

• But in the service of my country. Oliver Optic in "A Lieutenant at Eighteen".

• Why, man, you did a splendid service Bertram Mitford in "Harley Greenoak's Charge".

• Do you want money, mother, for this service Amelia Edith Huddleston Barr in "The Measure of a Man".