WordWeb Online

1. Exchange for money (bills or coins)
   "I cashed in the check as soon as it arrived in the mail";
   - cash
    
2. [informal] Take advantage of or capitalize on
   - cash in on [informal]
    
3. [informal] Cease to live; lose all bodily attributes and functions necessary to sustain life
   - die, decease [archaic], perish, go, exit, pass away, expire, pass, kick the bucket [informal], cash in one's chips [informal], buy the farm [N. Amer, informal], conk [informal], give-up the ghost [informal], drop dead, pop off [informal], choke, croak [informal], snuff it [informal], flatline [informal], cop it [Brit, informal], pop one's clogs [informal]

Derived forms: cashes in, cashing in, cashed in

Type of: benefit, change, change state, exchange, gain, interchange, profit, turn