Dirk's case maybe found in second taxi taken by poet (8)
I believe the answer is:
scabbard
'dirk's case maybe found' is the definition.
I can't judge whether this definition defines the answer.
'second taxi taken by poet' is the wordplay.
'second' becomes 's' (common abbreviation).
'taxi' becomes 'cab' (synonyms).
'taken by' means one lot of letters go next to another.
'poet' becomes 'bard' (bard is a kind of poet).
's'+'cab'+'bard'='SCABBARD'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for scabbard that I've seen before include "You may see one holding a dagger" , "Sheath for sword or dagger" , "Something to stick the knife into" , "It keeps food off clothes" , "Brand protector" .)