geeldikkop, noun

Forms:
Formerly also gheel dikop.
Origin:
AfrikaansShow more Afrikaans, geel yellow + dikkop see dikkop.
Pathology
Tribulosis, a disease of sheep caused by the ingestion of any of several species of Tribulus of the Zygophyllaceae (particularly T. terrestris, see dubbeltjie noun2 sense a) in a wilted state, and which is characterized by intense jaundice, and swelling of the head and face; dikkop sense 2 b. Also attributive.
1897 F. Macnab On Veldt & Farm 231There is another complaint which is very deadly among sheep, called Gheel Dikop. It commences with large swellings about the head, and the animal generally dies at last of suffocation.
1905 D. Hutcheon in Flint & Gilchrist Science in S. Afr. 347Geel Dikkop, or Yellow Thick Head. This is a peculiar disease affecting sheep and goats.
1914 Farmer’s Annual 220‘Geel Dikkop’ in sheep seems to be due to some plants growing on the veld at certain times, and the first thing to do is to change the sheep on to new pastures.
1957 Handbk for Farmers (Dept of Agric.) III. 339The ‘vermeersiektebossie’, Geigeria spp., and ‘geeldikkop’, Tribulus terrestris poisoning, cause heavy losses in sheep in the drier parts of South Africa.
1966 Henderson & Anderson Common Weeds[The common dubbeltjie] is best known in connection with the disease ‘geeldikkop’ in sheep.
1979 T. Gutsche There Was a Man 301In December 1915, ‘Geel Dikkop’ (Yellow Thick Head) in sheep..suddenly became epizootic and threatened the whole mutton, wool and hide industry.
1981 [see dubbeltjie noun2].
Tribulosis, a disease of sheep caused by the ingestion of any of several species of Tribulus of the Zygophyllaceae (particularly T. terrestris, see dubbeltjienouna) in a wilted state, and which is characterized by intense jaundice, and swelling of the head and face; dikkop2 b. Also attributive.

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18971979