tassel hyacinth: large beautiful Mediterranean species having sterile bluish-violet flowers with fringed corollas forming a tuft above the fertile flowers
grape hyacinth: any of various early flowering spring hyacinths native to Eurasia having dense spikes of rounded blue flowers resembling bunches of small grapes
muscle relaxant: a drug that reduces muscle contractility by blocking the transmission of nerve impulses or by decreasing the excitability of the motor end plate or by other actions