HKDictionary

洗底 (sai2 dai2) — to expunge a criminal record, possibly under a "spent convictions" scheme, from 洗底褲 (lit., "to wash one's underpants") in Cantonese

saiˊ²洗daiˊ²底
Mandarin Pinyin: xi3 di3

Meaning of 洗底

nounto expunge a criminal record, possibly under a "spent convictions" scheme, from 洗底褲 (lit., "to wash one's underpants")
noungangster giving up his membership or background; turn a new leaf

Characters in 洗底

洗sai2
clear; erase; redress; purge
底dai2
bottom; base; end

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