lame
1. crippled or physically disabled, especially in the foot or leg so as to limp or walk with difficulty.
2. impaired or disabled through defect or injury: a lame arm.
3. weak; inadequate; unsatisfactory; clumsy: a lame excuse.
4. Slang. out of touch with modern fads or trends; unsophisticated.
lame
1. (Medicine / Pathology) disabled or crippled in the legs or feet
2. painful or weak a lame back
3. weak; unconvincing a lame excuse
4. not effective or enthusiastic a lame try
5. US slang conventional or uninspiring
Lame is a good example of how words become slang and have their meaning changed. I don't think anyone even thinks of it in its original sense anymore, certainly not the majority of people anyway.