The sahde meaning of "round":

【圆的】round plate

【整的】a round ton

【环形】a round trip往还一次

【圆角】fillet and round内圆角和外圆角

【弹】guided round (missile)导弹

【围绕】The moon moves round the earth.

【到处】show sb round

【使圆】round the corners

【舍入】3.14159 rounded to four decimals becomes 3.1416