clamp (v.) Look up clamp at Dictionary.com
"to fasten with a clamp," 1670s, from clamp (n.). Related: Clamped; clamping.
clamp (n.) Look up clamp at Dictionary.com
device for fastening, c. 1300, probably from clamb, perhaps originally past tense of climb (v.), or from Middle Dutch clampe (Dutch klamp), from Proto-Germanic *klam-b- "clamp, cleat;" cognate with Middle Low German klampe "clasp, hook," Old High German klampfer "clip, clamp;" also probably related to Middle Dutch klamme "a clamp, hook, grapple," Danish klamme "a clamp, cramp," Old English clamm "a tie, fetter," perhaps from the same root as Latin glomus "ball-shaped mass" (see glebe); also compare clam (n.).