ha-ha

n ditch with a wall or fence in it, forming a boundary to a park or garden without interrupting the view （有墙或篱筑於其间的）壕沟（作公园或花园的边界而不致妨碍视线）.

gymnasium, gymnast, gymnastic, gymnastics, gynaecological (US gynecological), gynaecologist (US gynecologist), gynaecology (US gynecology), gyp, gypsum, gypsy, gypsy (also gipsy, Gypsy), gyrate, gyration, gyro, gyroscope, H, h'm, H, h, H-bomb, ha, habeas corpus, haberdasher, haberdashery, habit, habit-forming, habitability, habitable, habitant, habitat, habitation, habitual, habitually, habituate, habituation, habitue, hacienda, hack, hack-saw, hacker, hacking cough,