(biology) A structure situated between the primary cell wall and the plasma membrane of plant cells

that end in (t)ch (only when pronounced as [tʃ]) — impeach → impeaches (but psych → psychs) / that end in (s)s — miss → misses / that end in x — tax → taxes / that end in (z)z — fizz → fizzes

plural of windboard

(chemistry, in combination) Fifteen sodium atoms or ions in a compound