1  2  3  4

1  _  _  _  _

2  _  _  _  _

3  _  _  _  _

4  _  _  _  _


ACROSS
1)  be obliged to pay or repay
2)  a hinged catch that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward
3)  the chief solid component of mammalian urine; synthesized from ammonia and carbon dioxide and used as fertilizer and in animal feed and in plastics
4)  a member of a slavic people who settled in ____ia and neighboring areas in the 6th and 7th centuries


DOWN
1)  a musical work that has been created
2)  articles of the same kind or material; usually used in combination: `silver____', `soft____'
3)  an open vessel with a handle and a spout for pouring
4)  block consisting of a thick piece of something

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pawl
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