1. taking up, extending through, or occurring continually during a year: an all-year activity.
  2. open all year, as for business or occupancy: an all-year resort.
  3. usable or productive during all parts of a year: all-year pasture; all-year fishing grounds. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for all-year

Historical Examples of all-year