Name Meanings

Human
Oolong : A kind of Tea in Chinese
Chi-Chi : Slang for breast
Krillin : Chestnut or kind of nut
Tenshinhan : Fried Rice (not dish!)
Bulma : "Bloomers" or women's underwear
Videl: Unscrambled to spell Devil

Namek-jin
Nail : Pun for snail
Piano : Must I say the pun for this one?
Piccolo : Small flute

Saiyan-jin
Bra : Self-Explanitory but Ill say it anyway
Goten : is sky or heaven
Gohan : Cooked Rice in Romaji, or a meal
Kakarotto : Pun for carrot
Nappa : English word for cabbagePan : A kind of bread
Raditz : Pun for raddish
Saiyans : saiya is vegetable
Trunks : Trunks, you know, pants, geez
Vegeta : pun for vegtable.

Other
Cell : A human Cell
Taurus : Gang is named after kinds of plants
Freeza : Pun for freezing
King Cold: Pun for Cold
Kooler: Pun for Cooler
Ginyu : Gang is named after dairy products

Name Translations
Goku : (Son) Gokou, Gokuu, Goku, Gokuh
Kakarot : Kakkarotto, Kakarotto
Goten : Goten
Gohan : Gohan
Videl : Videl, Beederu
Pan : Pan
Vegeta : Vegeta, Vegita, Vejita
Trunks : Mirai or Chibi Trunks, Torankusu
Bulma : Bulma, Buruma, Bloomer
Piccolo : Piccolo, Pikalo, Piccalo
Yamcha : Yamucha
Krillin : Kuririn, Kulilin
Tien : Tenshinhan
Chaozu : Chiaotzu, Chaouzu, Chao-Su
Chichi : Chichi
Dende : Dende
Cell : Cell
Buu : Majin Buu, Boo