climb (v.) Look up climb at Dictionary.com
Old English climban, from West Germanic *klimbanan "go up by clinging" (cf. Old High German klimban, German klimmen). A strong verb in Old English, weak by 16c. Most other Germanic languages long ago dropped the -b. Related: Climbed; climbing.
climb (n.) Look up climb at Dictionary.com
late 16c., from climb (v.).