restroom structures, maintenance sheds, score boards, netting, semi-enclosed shelters and pavilions, shade structures, concessions structures , and off-street parking. Other uses or structures as may be approved by the director if the accessory use or structure complies
Read it in the chapter →How this ordinance defines it
The operative definition is the local one. Codes routinely subdivide a category into tiers — “day care 2, family”, “group home 2” — and attach different permissions to each, so only Alexandria’s own text settles what this covers.