1. A series of short sharp taps (as made by strokes on a drum or knocks on a door)
   - rat-a-tat-tat, rat-a-tat

Derived forms: rat-tats

Type of: tapping

• Heterosomata
• heterosporous
• heterospory
• heterostracan
• Heterostraci
• heterotaxy
• Heterotheca
• Heterotheca villosa
• heterothermic
• Heterotrichales
• heterotroph
• heterotrophic
• heterozygosity
• heterozygote
• heterozygous
• heth
• hetman
• Heuchera
• Heuchera americana
• Heuchera cylindrica
• Heuchera sanguinea
• heulandite
• heuristic
• heuristic program
• heuristic rule