Hoa

• (interj.) A stop; a halt; a moderation of pace. • (interj.) Stop! stand still! hold! -- a word now used by teamsters, but formerly to order the cessation of anything. • (interj.) Halloo! attend! -- a call to excite attention, or to give notice of approach.
Found on http://thinkexist.com/dictionary/meaning/hoa/

Hoa

A channel or pass connecting an atoll lagoon with the open ocean, e.g. at Mururoa Atoll (French Polynesia)
Found on http://www.encyclo.co.uk/local/20206

HoA

Heads of Agencies (medicine authorities in the European Union)
Found on http://www.encyclo.co.uk/local/20895
No exact match found