1.[countableC] informalDCC a wellington 长筒橡胶雨靴,防水橡胶靴
2[uncountableU] spoken informalphysicaleffort or force that you use to move or hit something 力气,劲
You need to give it some wellie.
你得用点劲。
Examples from the Corpus
wellie• It's like walking a tightrope in size-15 wellies.• And putting the boot in ... the recycling service for wellies.• So Flora put on her greenwellies and Jane her black ones, and they marched out over the hills.• Remember that stepping into wellies is always easier than trying to pull them on.• Perhaps the countryside has much to offer that is not just wellies, point-to-points and mulch.• It's got 100 watts of wellie.• The seedssprouted and the fuchsiacuttings struck, and now the little red wellies look wonderful.