Meaning of the Sanskrit Word: sarasvatyah

  sarasvatyāḥ—of the River Sarasvatī    SB 1.4.27, SB 2.9.45, SB 3.22.26-27, SB 3.23.25
  sarasvatyāḥ—on the bank of the Sarasvatī    SB 1.4.15
  sarasvatyāḥ—of the Sarasvatī    SB 3.33.13

Can't find any compound Sanskrit words containing sarasvatyah.