overclimb
/ˌəʊvəˈklʌɪm/Now chiefly poetic and archaic
verb
[with object] To climb over; to get over by climbing; to surmount.
Origin
Old English; earliest use found in Orosius' History. From over- + climb. Compare Middle Dutch overclimmen (Dutch overklimmen), Middle High German überklimmen (German überklimmen).