Origin: 1895–1900, Americanism; < Sp: lit., a quaking, equiv. to tembl(ar) to quake (perh. ≪ L timēre to fear and LL tremulāre to quake; see tremble) + -or-or1
earthquake, 1876, from Amer.Sp. temblor "earthquake," from Sp. temblor, lit. "a trembling," from temblar "to tremble," from V.L. *tremulare (see tremble).