Marmite

Etymology
From. The common-noun sense derives from an advertising campaign featuring the slogan "love it or hate it".

Proper noun

 * 1)  A brand of sticky, dark brown, strongly flavoured spread based on a yeast extract (a by-product of beer brewing), eaten on toast, in sandwiches, in savoury dishes, etc.

Noun

 * 1)  Something which people either love or hate.

Adjective

 * 1)  Divisive

Verb

 * 1)  To apply Marmite to.