shelduck
Pronunciation: /ˈʃɛldʌk/
(male also sheldrake /-dreɪk/)
Definition of shelduck
noun ( plural same or shelducks)
Origin:
Middle English (as sheldrake): probably from dialect sheld 'pied' (related to Middle Dutch schillede 'variegated') + duck1. The form shelduck dates from the early 18th century