h o llo w [halou] adj. When something is hollow, it has an empty space inside. -* Straws are hollow, so liq u id can flo w through them. in s t in c t [instin«] n. Instinct is the natural way that people behave w ithout thinking about it. -* Cats hunt mice because o f instinct. jo in t [d30int] n. A joint is a place of the body where the bones meet, such as the knee. -* Two im portant bones in your leg meet a t a jo in t in your knee. le a k [li:k] V. To leak is to let a liquid or gas pass through a flaw. -* The pipe leaks from many places. p h y s ic ia n [fizijsn] n. A physician is a doctor. -» The physician said I would feel better i f I took my medicine. s a c r ific e [saekrafais] v. To sacrifice som ething valuable is to give it up to get som ething else. -* Her parents sacrificed a lo t o f money in order fo r her to go to college. S tiff [stifl adj. When som ething is stiff, it is hard to move. -* The b ird was standing on the tree’s s tiff branch. s t r o k e [strouk] v. To stroke is to move a hand over som ething or someone. -* She stroked her cheek to see i f there was som ething on it. t r a g ic [traedjik] adj. When som ething is tragic, it is connected with death and suffering.
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— The airplane crashed in a tragic accident. [tju:n] n.
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A tune is a song.
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— The students played a fa m ilia r tune fo r the audience.