Cast out with a cry of pain, as was clear (6)

'cast' is the definition.
The answer and definition are different parts of speech. However, past participle verbs and adjectives can sometimes define each other.

'with a cry of pain as was clear' is the wordplay.
'with' means one lot of letters goes inside another.
'a cry of pain' becomes 'ow' (exclamation of pain).
'as' becomes 'sh' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'was' becomes 'existed' (past tense of to be - to exist).
'clear' suggests removing the centre (I've seen 'cleared' mean this (the inside letters are cleared out)).
'existed' with its middle taken out is 'ed'.
'sh'+'ed'='shed'
'ow' put within 'shed' is 'SHOWED'.

'out' is the link.

Can you help me to learn more?