雷大雨小

lit. much thunder but little rain; fig. a lot of talk but little action / his bark is worse than his bite

surname Lei

thunder / mine (weapon) / (Internet slang) terrifying / terrific

thunder / (bound form) (military) mine, as in 地雷[di4 lei2] land mine / (coll.) to shock; to stun; to astound / (Tw) (coll.) spoiler / (Tw) (coll.) to reveal plot details to (sb)

see 大夫[dai4 fu5]

big; large; great / older (than another person) / eldest (as in 大姐[da4 jie3]) / greatly; freely; fully / (dialect) father / (dialect) uncle (father's brother)

heavy rain / CL:場|场[chang2]

rain / CL:陣|阵[zhen4],場|场[chang2]

(literary) to rain / (of rain, snow etc) to fall / to precipitate / to wet

small / tiny / few / young