Sentence:  Political cartoonists rely a lot on <WSD>jizz</WSD>. When a new president or prime minister comes into office it usually takes the cartoonists a little while to decide which features to select as field marks but they then stylise these in ways that make them instantly recognisable to the rest of us, even though they may be grossly exaggerated. 
Meaning of the word marked with <WSD> tags:  The unique characteristics of a bird species that enable it to be immediately identified by an experienced birdwatcher who has seen that bird before and is familiar with its appearance and behaviour.