Princeton's WordNet

1. hour angle, HA(noun)

   (astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day

Wiktionary

1. ha(Verb)

   Alternate spelling of a

2. ha(Interjection)

   A representation of laughter.

   Ha, ha, ha! Thatu2019s funny.

3. ha(Interjection)

   An exclamation of triumph or discovery.

   Ha! Checkmate!

4. ha(Verb)

   Alternate spelling of a

5. Ha(ProperNoun)

   An ethnic and linguistic group based in Kigoma Region in western Tanzania.

6. Ha(ProperNoun)

   In Egyptian mythology, a god of the deserts to the west of Egypt, associated with the underworld, Duat and pictured as a man wearing the symbol for desert hills on his head.

Webster Dictionary

1. Ha(u)

   an exclamation denoting surprise, joy, or grief. Both as uttered and as written, it expresses a great variety of emotions, determined by the tone or the context. When repeated, ha, ha, it is an expression of laughter, satisfaction, or triumph, sometimes of derisive laughter; or sometimes it is equivalent to "Well, it is so."

• asAfrikaans
• إذا ، إنْArabic
• акоBulgarian
• sePortuguese (BR)
• jestližeCzech
• wennGerman
• hvisDanish
• εάνGreek
• siSpanish
• kuiEstonian
• اگرFarsi
• josFinnish
• siFrench
• אִםHebrew
• अगरHindi
• u slučaju daCroatian
• haHungarian
• kalauIndonesian
• efIcelandic
• seItalian
• もし～ならばJapanese
• 만약 …이라면Korean
• jeiLithuanian
• jaLatvian
• kalauMalay
• als, indienDutch
• hvis, dersomNorwegian
• jeśliPolish
• اگرPersian
• كه ،كه چيرېPashto
• sePortuguese
• dacăRomanian
• еслиRussian
• akSlovak
• čeSlovenian
• ukolikoSerbian
• omSwedish
• ถ้าThai
• (eğer/şayet) ..., -se/saTurkish
• (表示條件)如果Chinese (Trad.)
• якщоUkrainian
• اگرUrdu
• nếuVietnamese
• （表示条件）如果Chinese (Simp.)