Words That Rhyme With "Gastrin" :

2 syllables:

aspirin, blasting, casting, estrin, fasting, hamstring, lasting, oestrin, plastron

3 syllables:

alpestrine, apastron, contrasting, elastin, hoatzin, lacustrine, recasting

4 syllables:

alabastrine, alabastron, everlasting, periastron, thromboplastin