Lewis Short
(verb) : ex-surdo (exurdo), āvi, ātum, 1, surdus
* To render deaf, to deafen (poet. and in post-Aug. prose).
* Lit.: paniculae flos si aures intraverit, exsurdat,Plin. 32, 10, 52, § 141.
* Transf.
* In gen., to stun, overcome with din: aures curiae,Val. Max. 2, 2, 3: turbida nec calamos exsurdant classica nostros,Calp. Ecl. 4, 131.
* Esp., of the taste, to dull, blunt: vina palatum,Hor. S. 2, 8, 38.
Charlton T. Lewis, Charles Short, A Latin Dictionary