paronomasia
Concise Oxford English Dictionary © 2008 Oxford University Press:
paronomasia /ˌparənəˈmeɪzɪə/
▶noun a pun.
– origin C16: via L. from Gk paronomasia, from para- ‘beside’ (expressing alteration) + onomasia ‘naming’.
'paronomasia' also found in these Oxford entries:

