Feeble sort of meal (4)
'feeble' is the definition.
(I've seen this before)
'sort of meal' is the wordplay.
'sort of' is an anagram indicator.
'meal' is an anagram of 'LAME'.
(Other definitions for lame that I've seen before include "Fabric interwoven with metal threads", "Walking with a limp", "Unable to walk properly", "Crippled", "Weak and unconvincing like injured foot".)