1. unable to walk normally due to an injury or illness affecting the legs or feet
The horse was lame after the accident.
O cavalo ficou manco depois do acidente.
2. weak, unconvincing, or unsatisfactory
That's a lame excuse for being late.
Essa é uma desculpa fraca para chegar atrasado.
3. uncool, unfashionable, or socially awkward (slang)
That joke is so lame.
Essa piada é muito sem-graça.