Meaning of the Sanskrit Word: garutmatah

  garutmataḥ—of Garuḍa    SB 3.21.11, SB 7.8.26
  garutmataḥ—of Garuḍa, the carrier of the Supreme Personality of Godhead.    SB 5.14.42

Can't find any compound Sanskrit words containing garutmatah.